Update action

Author: haochengxia

.github/workflows/docs.yml

@@ -62,7 +62,7 @@ jobs:
 
       - name: Upload artifact
         if: github.event_name != 'pull_request'
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: docs/site