ci: workaround any special character issues on autostage (#4570)

Signed-off-by: tison <[email protected]>

.github/workflows/docs.yml

@@ -488,20 +488,13 @@ jobs:
           publish_dir: website/build
           publish_branch: site/main-staging
 
-      - name: Prepare rc staged name
-        if: ${{ startsWith(github.ref, 'refs/tags/') && contains(github.ref, 'rc') }}
-        run: |
-          export OPENDAL_WEBSITE_STAGED_NAME=$(echo ${{ github.ref_name }} | sed 's/[.-]/_/g')
-          echo OPENDAL_WEBSITE_STAGED_NAME=${OPENDAL_WEBSITE_STAGED_NAME}
-          echo OPENDAL_WEBSITE_STAGED_NAME=${OPENDAL_WEBSITE_STAGED_NAME} >> $GITHUB_ENV
-
       - name: Deploy to rc staged
         uses: peaceiris/[email protected]
         if: ${{ startsWith(github.ref, 'refs/tags/') && contains(github.ref, 'rc') }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: website/build
-          publish_branch: site/${{ env.OPENDAL_WEBSITE_STAGED_NAME }}-staging
+          publish_branch: site/rc-staging
 
       - name: Clear build
         run: rm -rf ./website/build