⚙️ fix auto sync gh pages github action (#1211)

Signed-off-by: xudong liu <[email protected]>

Author: XudongLiuHarold

.github/workflows/auto-sync-gh-pages.yml

@@ -39,7 +39,7 @@ jobs:
 
           current_branch=$(git rev-parse --abbrev-ref HEAD)
 
-          if [ "${current_branch}" == "master" && "${valid_tag}" == 0 ]; then
+          if [[ "${current_branch}" == "master" && "${valid_tag}" == 0 ]]; then
             echo "valid=1" >> $GITHUB_OUTPUT
           fi