ci(gh-pages): update gh-pages workflow

Author: lzwjava

.github/workflows/gh-pages.yml

@@ -45,7 +45,8 @@ jobs:
       - name: Update Language Files
         if: steps.dry_run_lang.outputs.lang_updated == 'true'
         run: |
-          TOTAL_POSTS=$(python scripts/update_lang.py --dry_run | grep "Total Markdown files to process:" | awk '{print $NF}')
+          DRY_RUN_LANG_OUTPUT=$(python scripts/update_lang.py --dry_run)
+          TOTAL_POSTS=$(echo "$DRY_RUN_LANG_OUTPUT" | grep "Total Markdown files to process:" | awk '{print $NF}')
           echo "Total posts to process: $TOTAL_POSTS"
 
           if [[ "$TOTAL_POSTS" -eq 0 ]]; then