ClickHouse/docs/_singlehtml_templates/navigation.html

<h3>{{ _('Navigation') }}</h3>
{{ toctree(includehidden=theme_sidebar_includehidden, collapse=False) }}
{% if theme_extra_nav_links %}
<hr />
<ul>
    {% for text, uri in theme_extra_nav_links.items() %}
        <li class="toctree-l1"><a href="{{ uri }}">{{ text }}</a></li>
            {% endfor %}
            </ul>
{% endif %}