icingaweb2/modules/doc/application/views/scripts/module/index.phtml

<h1><?= $this->translate('Module documentations'); ?></h1>
<ul>
    <?php foreach ($modules as $module): ?>
        <li>
            <a href="<?= $this->getHelper('Url')->url(array('moduleName' => $module), 'doc/module/toc', false, false); ?>">
                <?= $module ?>
            </a>
        </li>
    <?php endforeach ?>
</ul>