fix HTML tag in items HTML template (geopython#2178)

Author: tomkralidis

pygeoapi/templates/collections/items/index.html

@@ -18,7 +18,7 @@
     <script src="https://unpkg.com/leaflet.markercluster/dist/leaflet.markercluster-src.js"></script>
 
     {% if data['itemtype'] == 'record' %}
-    <link rel="stylesheet" href="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.css"></script>
+    <link rel="stylesheet" href="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.css"/>
     <script src="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.js"></script>
     {% endif %}
 {% endblock %}