update broken link (#1095)

source/contributing/documentation/style-guide.md

@@ -53,7 +53,7 @@ Don't use references to popular culture.
 What you may consider well-known may be entirely obscure and distracting to people from different backgrounds.
 
 [Contributor Covenant]: https://github.com/EthicalSource/contributor_covenant/blob/cd7fcf684249786b7f7d47ba49c23a6bcb3233eb/content/version/2/1/code_of_conduct.md
-[The Carpentries Code of Conduct]: https://github.com/carpentries/docs.carpentries.org/blob/4691971d9f49544054410334140a4fd391a738da/topic_folders/policies/code-of-conduct.md
+[The Carpentries Code of Conduct]: https://github.com/carpentries/docs.carpentries.org/blob/fb188fa8d7f57ad85eb525091e335ed0d8fea16d/source/policies/coc/index.md#L13-L19
 
 ### Voice