Remove whitesspace and break long line

CONTRIBUTING.md

@@ -71,7 +71,8 @@ To use the web interface for contributing to a lesson:
   to obtain an external account).
 2.  Within your version of the forked repository, move to the `master` branch and
 create a new branch for each significant change being made.
-3.  Navigate to the file(s) you wish to change within the new branches and make revisions as required.
+3.  Navigate to the file(s) you wish to change within the new branches and make
+revisions as required.
 4.  Commit all changed files within the appropriate branches.
 5.  Create individual merge requests from each of your changed branches
 to the `master` branch within the originating repository.

reference.md

@@ -247,7 +247,7 @@ string
 
 syntax
 :   The rules that define how code must be written for a computer to understand.
-    
+
 syntax error
 :   A programming error that occurs when statements are in an order or contain characters
     not expected by the programming language.