Update pr-auto-comment.yml

Author: LaylaLiu-gmail

.github/workflows/pr-auto-comment.yml

@@ -16,7 +16,7 @@ jobs:
         id: generate-token
         uses: actions/create-github-app-token@v2
         with:
-          app-id: ${{ vars.APP_ID }}
+          app-id: ${{ secrets.APP_ID }}
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
       - name: Add comment
         uses: actions/github-script@v7