stackdriver: publish docs to v5.3 (not root)

docs/sources/features/datasources/stackdriver.md

@@ -61,8 +61,10 @@ Click on the links above and click the `Enable` button:
     ![Choose role](/img/docs/v54/stackdriver_service_account_choose_role.png)
 5. Click the Create button. A JSON key file will be created and downloaded to your computer. Store this file in a secure place as it allows access to your Stackdriver data.
 6. Upload it to Grafana on the datasource Configuration page. You can either upload the file or paste in the contents of the file.
+    
     ![Choose role](/img/docs/v54/stackdriver_grafana_upload_key.png)
 7. The file contents will be encrypted and saved in the Grafana database. Don't forget to save after uploading the file!
+    
     ![Choose role](/img/docs/v54/stackdriver_grafana_key_uploaded.png)
 
 ## Metric Query Editor

docs/versions.json

 [
+  { "version": "v5.3", "path": "/v5.3", "archived": false, "current": false },
   { "version": "v5.2", "path": "/", "archived": false, "current": true },
   { "version": "v5.1", "path": "/v5.1", "archived": true },
   { "version": "v5.0", "path": "/v5.0", "archived": true },