remove unnecessary indent

Because code is now fenced, there is no need for an indent. This commit removes the indent from the Hailstone Pattern.

Author: A1fus

Extras/README.md

@@ -9,23 +9,23 @@ The hailstone pattern is a cool number pattern that for any positive whole numbe
 Here is an example that starts with the number 7:
 
 ```
-    7
-    22
-    11
-    34
-    17
-    52
-    26
-    13
-    40
-    20
-    10
-    5
-    16
-    8
-    4
-    2
-    1
+7
+22
+11
+34
+17
+52
+26
+13
+40
+20
+10
+5
+16
+8
+4
+2
+1
 ```
 
 It took 16 steps!