fix action

.github/workflows/update_page.yml

@@ -22,6 +22,7 @@ jobs:
          uses: actions/checkout@v4
          with: 
             repository: 'Light-Beacon/HomepageBuilder'
+            ref: 'developing'
             path: 'builder'
        - name: 创建 Pagebuilder 环境
          run: |