Unable to open Query tool on Internet Explorer.

Remove extra comma in the function argument while starting the query tool.
Other browsers had no problems, but it is an issue on Internet explorer.

Fixes #4769

docs/en_US/release_notes_4_14.rst

@@ -24,4 +24,5 @@ Bug fixes
 | `Issue #4755 <https://redmine.postgresql.org/issues/4755>`_ -  Ensure that pgAdmin should work behind reverse proxy if the inbuilt server is used as it is.
 | `Issue #4756 <https://redmine.postgresql.org/issues/4756>`_ -  Fix issue where pgAdmin does not load completely if loaded in an iframe.
 | `Issue #4768 <https://redmine.postgresql.org/issues/4768>`_ -  Ensure pgAdmin should work behind reverse proxy on a non standard port.
+| `Issue #4769 <https://redmine.postgresql.org/issues/4769>`_ -  Fix query tool open issue on Internet Explorer.
 | `Issue #4777 <https://redmine.postgresql.org/issues/4777>`_ -  Fix issue where query history is not visible in the query history tab.

web/pgadmin/tools/datagrid/templates/datagrid/index.html

@@ -440,7 +440,7 @@
     sqlEditorController.start(
         {{ uniqueId }},
         {{ url_params|safe}},
-        '{{ layout|safe }}',
+        '{{ layout|safe }}'
     );
 });
 {% endblock %}