Algolia requires an H1 title

Author: sarahs

layouts/graphql-explorer.html

@@ -15,6 +15,8 @@
               {% include breadcrumbs %}
             </div>
           </div>
+
+          <h1 class="border-bottom-0">{{ page.title }}</h1>
 
           <div class="mt-2">
             <div>