Fix typo (sindresorhus#2834)

Author: VivekGuruduttK28

contributing.md

@@ -4,7 +4,7 @@ Please note that this project is released with a [Contributor Code of Conduct](c
 
 ## Adding an awesome list
 
-Please ensure your pull request adheres to the [list guidelines](pull_request_template.md).
+Please ensure your pull request adheres to the [list of guidelines](pull_request_template.md).
 
 ## Creating your own awesome list