Fix ironically broken link

Author: Philippus

contribute/tools.md

@@ -103,7 +103,7 @@ if you would like to help revive them.
 
 ### Broken Links?
 
-Stuff changes. Found a broken link or something that needs updating on this page? Please, consider [submitting a documentation pull request](/contribute/documentation/#updating-scala-langorg) to fix it.
+Stuff changes. Found a broken link or something that needs updating on this page? Please, consider [submitting a documentation pull request](/contribute/documentation.html#updating-scala-langorg) to fix it.
 
 ### Projects