docs(commitlint): clarify default config discovery usage in workflow

Author: ooples

.github/workflows/commitlint.yml

@@ -15,5 +15,6 @@ jobs:
       - name: Lint commits
         uses: wagoid/commitlint-github-action@v6
         with:
+          # An empty configFile parameter relies on commitlint's default configuration discovery.
           configFile: ''