Update references in commit message instructions

Updated references for semantic commit message guidelines.

Author: rulasg

.github/copilot-commit-message-instructions.md

@@ -28,7 +28,7 @@ More Examples:
 - `chore`: (updating grunt tasks etc; no production code change)
 
 References:
-
+- https://gist.githubusercontent.com/joshbuchea/6f47e86d2510bce28f8e7f42ae84c716/raw/e75b1b9536ee5ee82e2ec0ba8948d8f8238488c3/semantic-commit-messages.md
 - https://www.conventionalcommits.org/
 - https://seesparkbox.com/foundry/semantic_commit_messages
 - http://karma-runner.github.io/1.0/dev/git-commit-msg.html