Added missing quotes in openlayers.html template.

django/contrib/gis/templates/gis/openlayers.html

@@ -5,11 +5,11 @@
     #{{ id }}_div_map { position: relative; vertical-align: top; float: {{ LANGUAGE_BIDI|yesno:"right,left" }}; }
     {% if not display_raw %}#{{ id }} { display: none; }{% endif %}
     .olControlEditingToolbar .olControlModifyFeatureItemActive {
-        background-image: url("{% static "admin/img/gis/move_vertex_on.svg" %});
+        background-image: url("{% static "admin/img/gis/move_vertex_on.svg" %}");
         background-repeat: no-repeat;
     }
     .olControlEditingToolbar .olControlModifyFeatureItemInactive {
-        background-image: url("{% static "admin/img/gis/move_vertex_off.svg" %});
+        background-image: url("{% static "admin/img/gis/move_vertex_off.svg" %}");
         background-repeat: no-repeat;
     }{% endblock %}
 </style>