Fix 404.html

_templates/404.html

@@ -4,11 +4,12 @@
 
 {% block title %}{{ title }}{% endblock %}
 
-{% block content %}
+{% block docs_body %}
 <div class="document">
     <h1>{{ title }}</h1>
     <p>Oops! The page you're looking for does not exist.</p>
     <p>You can return to the <a href="{{ pathto(master_doc) }}">home page</a>.</p>
     <p>If you believe this is a broken link, please <a data-bs-toggle="modal" data-bs-target="#feedbackModal" href="#" onclick="getFeedbackButtonhref(this)">let us know</a>.</p>
 </div>
+{{ super() }}
 {% endblock %}