zola-theme-terminimal/templates/macros/language_menu.html

{% macro menu(page) %}
<ul class="menu menu--desktop menu--language-selector">
  <li class="menu__trigger">Language&nbsp;▾</li>
  <li>
    <ul class="menu__dropdown">
      {%- for item in page.translations %}
      <li><a href="{{ item.permalink }}">{{ item.lang }}</a></li>
      {% endfor -%}
    </ul>
  </li>
</ul>
{% endmacro menu %}