_includes/javadoc.html

<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
    <li class="navigation-list-item{% if page.url contains '/javadoc/mozilla-central/index.html' %} active{% endif %}">
        <a href="{{ site.url }}{{ site.baseurl }}/javadoc/mozilla-central/index.html" class="navigation-list-link{% if page.url contains '/javadoc/mozilla-central/index.html' %} active{% endif %}">API Documentation</a>
    </li>
    <li class="navigation-list-item{% if page.url contains 'CHANGELOG' %} active{% endif %}">
        <a href="{{ site.url }}{{ site.baseurl }}/javadoc/mozilla-central/org/mozilla/geckoview/doc-files/CHANGELOG" class="navigation-list-link{% if page.url contains 'CHANGELOG' %} active{% endif %}">API Changelog</a>
    </li>