fix(build.yml): remove '/'

Author: b07902011

.github/workflows/build.yml

@@ -138,7 +138,7 @@ jobs:
 
       - name: Slack Notification
         uses: rtCamp/action-slack-notify@v2
-        if: ${{ github.ref == 'refs/heads/develop' || github.event.pull_request.base.ref == '/develop'}}
+        if: ${{ github.ref == 'refs/heads/develop' || github.event.pull_request.base.ref == 'develop'}}
         env:
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
           SLACK_COLOR: 'success'