Apply suggestions from code review

Co-authored-by: per1234 <accounts@perglass.com>

examples/04.Communication/ASCIITable/ASCIITable.ino

@@ -16,7 +16,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/ASCIITable
+  https://docs.arduino.cc/built-in-examples/communication/ASCIITable/
 */
 
 void setup() {

examples/04.Communication/Dimmer/Dimmer.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/Dimmer
+  https://docs.arduino.cc/built-in-examples/communication/Dimmer/
 */
 
 const int ledPin = 9;  // the pin that the LED is attached to

examples/04.Communication/Graph/Graph.ino

@@ -22,7 +22,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/Graph
+  https://docs.arduino.cc/built-in-examples/communication/Graph/
 */
 
 void setup() {

examples/04.Communication/Midi/Midi.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/Midi
+  https://docs.arduino.cc/built-in-examples/communication/Midi/
 */
 
 void setup() {

examples/04.Communication/MultiSerial/MultiSerial.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/MultiSerialMega
+  https://docs.arduino.cc/built-in-examples/communication/MultiSerialMega/
 */
 
 

examples/04.Communication/PhysicalPixel/PhysicalPixel.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/PhysicalPixel
+  https://docs.arduino.cc/built-in-examples/communication/PhysicalPixel/
 */
 
 const int ledPin = 13;  // the pin that the LED is attached to

examples/04.Communication/ReadASCIIString/ReadASCIIString.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/ReadASCIIString
+  https://docs.arduino.cc/built-in-examples/communication/ReadASCIIString/
 */
 
 // pins for the LEDs:

examples/04.Communication/SerialCallResponse/SerialCallResponse.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/SerialCallResponse
+  https://docs.arduino.cc/built-in-examples/communication/SerialCallResponse/
 */
 
 int firstSensor = 0;   // first analog sensor

examples/04.Communication/SerialCallResponseASCII/SerialCallResponseASCII.ino

@@ -19,7 +19,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/SerialCallResponseASCII
+  https://docs.arduino.cc/built-in-examples/communication/SerialCallResponseASCII/
 */
 
 int firstSensor = 0;   // first analog sensor

examples/04.Communication/SerialEvent/SerialEvent.ino

@@ -15,7 +15,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/SerialEvent
+  https://docs.arduino.cc/built-in-examples/communication/SerialEvent/
 */
 
 String inputString = "";      // a String to hold incoming data

examples/04.Communication/SerialPassthrough/SerialPassthrough.ino

@@ -21,7 +21,7 @@
   created 23 May 2016
   by Erik Nyquist
 
-  https://docs.arduino.cc/built-in-examples/communication/SerialPassthrough
+  https://docs.arduino.cc/built-in-examples/communication/SerialPassthrough/
 */
 
 void setup() {

examples/04.Communication/VirtualColorMixer/VirtualColorMixer.ino

@@ -13,7 +13,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/communication/VirtualColorMixer
+  https://docs.arduino.cc/built-in-examples/communication/VirtualColorMixer/
 */
 
 const int redPin = A0;    // sensor to control red color

examples/05.Control/Arrays/Arrays.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/Arrays
+  https://docs.arduino.cc/built-in-examples/control-structures/Arrays/
 */
 
 int timer = 100;  // The higher the number, the slower the timing.

examples/05.Control/ForLoopIteration/ForLoopIteration.ino

@@ -14,7 +14,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/ForLoopIteration
+  https://docs.arduino.cc/built-in-examples/control-structures/ForLoopIteration/
 */
 
 int timer = 100;  // The higher the number, the slower the timing.

examples/05.Control/IfStatementConditional/IfStatementConditional.ino

@@ -21,7 +21,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/ifStatementConditional
+  https://docs.arduino.cc/built-in-examples/control-structures/ifStatementConditional/
 */
 
 // These constants won't change:

examples/05.Control/WhileStatementConditional/WhileStatementConditional.ino

@@ -24,7 +24,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/WhileStatementConditional
+  https://docs.arduino.cc/built-in-examples/control-structures/WhileStatementConditional/
 */
 
 

examples/05.Control/switchCase/switchCase.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/SwitchCase
+  https://docs.arduino.cc/built-in-examples/control-structures/SwitchCase/
 */
 
 // these constants won't change. They are the lowest and highest readings you

examples/05.Control/switchCase2/switchCase2.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/control-structures/SwitchCase2
+  https://docs.arduino.cc/built-in-examples/control-structures/SwitchCase2/
 */
 
 void setup() {

examples/06.Sensors/ADXL3xx/ADXL3xx.ino

@@ -21,7 +21,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/sensors/ADXL3xx
+  https://docs.arduino.cc/built-in-examples/sensors/ADXL3xx/
 */
 
 // these constants describe the pins. They won't change:

examples/06.Sensors/Knock/Knock.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/sensors/Knock
+  https://docs.arduino.cc/built-in-examples/sensors/Knock/
 */
 
 

examples/06.Sensors/Memsic2125/Memsic2125.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/sensors/Memsic2125
+  https://docs.arduino.cc/built-in-examples/sensors/Memsic2125/
 */
 
 // these constants won't change:

examples/06.Sensors/Ping/Ping.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/sensors/Ping
+  https://docs.arduino.cc/built-in-examples/sensors/Ping/
 */
 
 // this constant won't change. It's the pin number of the sensor's output:

examples/07.Display/RowColumnScanning/RowColumnScanning.ino

@@ -28,7 +28,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/display/RowColumnScanning
+  https://docs.arduino.cc/built-in-examples/display/RowColumnScanning/
 */
 
 // 2-dimensional array of row pin numbers:

examples/07.Display/barGraph/barGraph.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/display/BarGraph
+  https://docs.arduino.cc/built-in-examples/display/BarGraph/
 */
 
 // these constants won't change:

examples/08.Strings/CharacterAnalysis/CharacterAnalysis.ino

@@ -10,7 +10,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/CharacterAnalysis
+  https://docs.arduino.cc/built-in-examples/strings/CharacterAnalysis/
 */
 
 void setup() {

examples/08.Strings/StringAdditionOperator/StringAdditionOperator.ino

@@ -10,7 +10,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringAdditionOperator
+  https://docs.arduino.cc/built-in-examples/strings/StringAdditionOperator/
 */
 
 // declare three Strings:

examples/08.Strings/StringAppendOperator/StringAppendOperator.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringAppendOperator
+  https://docs.arduino.cc/built-in-examples/strings/StringAppendOperator/
 */
 
 String stringOne, stringTwo;

examples/08.Strings/StringCaseChanges/StringCaseChanges.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringCaseChanges
+  https://docs.arduino.cc/built-in-examples/strings/StringCaseChanges/
 */
 
 void setup() {

examples/08.Strings/StringCharacters/StringCharacters.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringCharacters
+  https://docs.arduino.cc/built-in-examples/strings/StringCharacters/
 */
 
 void setup() {

examples/08.Strings/StringComparisonOperators/StringComparisonOperators.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringComparisonOperators
+  https://docs.arduino.cc/built-in-examples/strings/StringComparisonOperators/
 */
 
 String stringOne, stringTwo;

examples/08.Strings/StringConstructors/StringConstructors.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringConstructors
+  https://docs.arduino.cc/built-in-examples/strings/StringConstructors/
 */
 
 void setup() {

examples/08.Strings/StringIndexOf/StringIndexOf.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringIndexOf
+  https://docs.arduino.cc/built-in-examples/strings/StringIndexOf/
 */
 
 void setup() {

examples/08.Strings/StringLength/StringLength.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringLengthTrim
+  https://docs.arduino.cc/built-in-examples/strings/StringLengthTrim/
 */
 
 String txtMsg = "";                               // a string for incoming text

examples/08.Strings/StringLengthTrim/StringLengthTrim.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringLengthTrim
+  https://docs.arduino.cc/built-in-examples/strings/StringLengthTrim/
 */
 
 void setup() {

examples/08.Strings/StringReplace/StringReplace.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringReplace
+  https://docs.arduino.cc/built-in-examples/strings/StringReplace/
 */
 
 void setup() {

examples/08.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringStartsWithEndsWith
+  https://docs.arduino.cc/built-in-examples/strings/StringStartsWithEndsWith/
 */
 
 void setup() {

examples/08.Strings/StringSubstring/StringSubstring.ino

@@ -9,7 +9,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringSubstring
+  https://docs.arduino.cc/built-in-examples/strings/StringSubstring/
 */
 
 void setup() {

examples/08.Strings/StringToInt/StringToInt.ino

@@ -12,7 +12,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/strings/StringToInt
+  https://docs.arduino.cc/built-in-examples/strings/StringToInt/
 */
 
 String inString = "";  // string to hold input

examples/09.USB/Keyboard/KeyboardLogout/KeyboardLogout.ino

@@ -22,7 +22,7 @@
 
   This example is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/KeyboardLogout
+  https://docs.arduino.cc/built-in-examples/usb/KeyboardLogout/
 */
 
 #define OSX 0

examples/09.USB/Keyboard/KeyboardMessage/KeyboardMessage.ino

@@ -17,7 +17,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/KeyboardMessage
+  https://docs.arduino.cc/built-in-examples/usb/KeyboardMessage/
 */
 
 #include "Keyboard.h"

examples/09.USB/Keyboard/KeyboardReprogram/KeyboardReprogram.ino

@@ -22,7 +22,7 @@
 
   This example is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/KeyboardReprogram
+  https://docs.arduino.cc/built-in-examples/usb/KeyboardReprogram/
 */
 
 #include "Keyboard.h"

examples/09.USB/Keyboard/KeyboardSerial/KeyboardSerial.ino

@@ -16,7 +16,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/KeyboardSerial
+  https://docs.arduino.cc/built-in-examples/usb/KeyboardSerial/
 */
 
 #include "Keyboard.h"

examples/09.USB/KeyboardAndMouseControl/KeyboardAndMouseControl.ino

@@ -18,7 +18,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/KeyboardAndMouseControl
+  https://docs.arduino.cc/built-in-examples/usb/KeyboardAndMouseControl/
 */
 
 #include "Keyboard.h"

examples/09.USB/Mouse/ButtonMouseControl/ButtonMouseControl.ino

@@ -20,7 +20,7 @@
 
   This example code is in the public domain.
 
-  https://docs.arduino.cc/built-in-examples/usb/ButtonMouseControl
+  https://docs.arduino.cc/built-in-examples/usb/ButtonMouseControl/
 */
 
 #include "Mouse.h"