Update CONTRIBUTING.md

Co-authored-by: Alex Hoppen <[email protected]>

Author: heckj

CONTRIBUTING.md

@@ -119,7 +119,7 @@ If someone sends you a change privately, encourage them to submit it to the appr
 
 Code Templates
 
-As mentioned in the Community Overview, the license and copyright protections for Swift.org code are called out at the top of every source code file.
+The license and copyright protections for Swift.org code are called out at the top of every source code file.
 On the rare occasion you contribute a change that includes a new source file, ensure that the header is filled out appropriately.
 
 For Swift source files the code header should look this: