Limit to yml files

Author: peixian

.github/workflows/yaml-lint.yml

@@ -11,7 +11,7 @@ jobs:
       - name: 'Yamllint'
         uses: karancode/yamllint-github-action@master
         with:
-          yamllint_file_or_dir: 'charts/whatsapp-proxy-chart/*/*'
+          yamllint_file_or_dir: 'charts/whatsapp-proxy-chart/*/*.yml'
           yamllint_strict: false
           yamllint_comment: true
         env: