PeerTube/client/src/app/+admin/plugins/plugins.component.html

<div class="admin-sub-header">
  <div class="admin-sub-nav">
    <a i18n routerLink="list-installed" routerLinkActive="active">Installed</a>

    <a i18n routerLink="search" routerLinkActive="active">Search</a>
  </div>
</div>

<router-outlet></router-outlet>