simplify macro logic

pygeoapi/templates/item.html

@@ -2,9 +2,7 @@
 {# Optionally renders an img element, otherwise standard value or link rendering #}
 {% macro render_item_value(v, width) -%}
     {% set val = v | string | trim | lower %}
-    {% if val|length and
-      (val.endswith(".jpg") or val.endswith(".jpeg") or val.endswith(".png") or val.endswith(".gif") or val.endswith(".bmp"))
-    %}
+    {% if val|length and val.endswith(('.jpg', '.jpeg', '.png', '.gif', '.bmp')) %}
         {# Ends with image extension: render img element with link to image #}
         <a href="{{ val }}"><img src="{{ val }}" alt="" width="{{ width }}"/></a>
     {% else %}