Fix embedded go braces (#27)

Author: cmmarslender

templates/check-commit-signing.yml

@@ -11,7 +11,7 @@ on:
       - "**"
 
 concurrency:
-  group: ${{ github.event_name == 'pull_request' && format('{0}-{1}', github.workflow_ref, github.event.pull_request.number) || github.run_id }}
+  group: ${{`{{ github.event_name == 'pull_request' && format('{0}-{1}', github.workflow_ref, github.event.pull_request.number) || github.run_id }}`}}
   cancel-in-progress: true
 
 jobs: