Fix for documentation typos

doc/readme.md

@@ -55,7 +55,7 @@ otherwise images can be as large as memory allows.
 This is the ZX Spectrum software to load your converted images that are
 saved in the .tap (tape) output file. Typically the "Simple" option will 
 suffice for Spectrum emulators and individual images. Buffered USR0 provides 
-a better solution  for a real Spectrum and requires at least a 128K model 
+a better solution for a real Spectrum and requires at least a 128K model 
 to use, but removes attribute flicker commonly seen during video playback. 
 GigaScreen USR 0 is also 128K only but is intended specifically to view the
 GigaScreen 102 colour images and is not compatible with video or regular
@@ -172,7 +172,7 @@ converting video then the preview will show a random frame from the first
 few seconds.
 The character converter dither which attempts to map the graphics to the ZX 
 spectrum character set, this tends to work best with pictures that are not 
-"busy" and have high constrast.
+"busy" and have high contrast.
 
 #### Colour Mode
 Choose whether to have two colour dithered images "Monochrome", "Full Palette" 
@@ -196,8 +196,8 @@ which where generated by taking 8 initial colours with full
 brightness and halving the voltage, producing another 7 (8) colours. 
 Converted image colours can only be in one of these two sets. When the 
 converter detects that pixels being analysed are in both sets it decides 
-based on the favouristism mode which set it should use for the final result. 
-The "favouristism" modes are Half Brightness, Full Brightness or Most Popular 
+based on the favouritism mode which set it should use for the final result. 
+The favouritism modes are Half Brightness, Full Brightness or Most Popular 
 Colour, the latter mode determines the set for the whole 8x8 pixel attribute 
 block by finding which set the most popular (frequently occurring) colour is 
 in. The half and full modes determine that if an analysed attribute block 
@@ -236,7 +236,7 @@ the Character Converter dither mode.
 
 #### Serpentine Error Diffusion
 This mode causes any error diffusion dither algorithms to switch directions
-on each consequtive pixel line, as opposed to "book" style reading of the
+on each consecutive pixel line, as opposed to "book" style reading of the
 pixels which reads only left to right. The result is that some dithers
 may produce better results with less perceivable dithering patterns in the
 final image.
@@ -259,7 +259,8 @@ red in screen 2. The option is intended to reduce artifacts and flicker when
 alternating screens.
 You can choose to order in a number of ways but "Luminosity" is generally 
 the best, "None" is fast and "Intelligent" attempts to group colours. 
-Additionally "Brightness" may reduce flicker, "Contrast" and "Hue" may reduce may help reduce attribute artifact edges.
+Additionally "Brightness" may reduce flicker, "Contrast" and "Hue" may reduce may help 
+reduce attribute artifact edges.
 
 #### Colour Distance Algorithm
 When making a decision on which Spectrum colours best match those of the source 
@@ -285,7 +286,6 @@ option with caution.
 In simple terms the processing is devoted to video processing when it is switched on, 
 resulting in a stuttering real time preview. When it is switched off - the recommended
 setting - more processing is devoted to the real time preview.
-In any future releases this setting may control other similar optimisations.
 
 ### FAQ