fix alternate schemajson type in template

Author: vincentsarago

tifeatures/templates/queryables.html

@@ -9,7 +9,7 @@
       {% endif %}
     {% endfor %}
 
-    <li class="ml-auto json-link"><a target="_blank" href="{{ url }}?f=json">JSON</a></li>
+    <li class="ml-auto json-link"><a target="_blank" href="{{ url }}?f=schemajson">JSON</a></li>
   </ol>
 </nav>