Update rules/Proj3002.md

Author: Corniel

rules/Proj3002.md

@@ -9,7 +9,7 @@ actual code that should be executed. Comments should be reserved to explain
 difficult to understand code or the reason for doing something out of the
 ordinary.
 
-For code that is not longer needed, [version control](https://en.wikipedia.org/wiki/Version_control)
+For code that is no longer needed, [version control](https://en.wikipedia.org/wiki/Version_control)
 should be used instead.
 
 ## Non-compliant