pelican-elegant/templates/_includes/translations.html

{% macro translations_for(article) %}
{% if article.translations %}
<p id="list-of-translations">
This post is also available in:
    {% for translation in article.translations|sort(attribute = 'lang') %}
    <a href="{{ SITEURL }}/{{ translation.url }}">{{ translation.lang }}</a>{% if loop.index0 + 2 == loop.length %} and{% elif not loop.last %}, {% endif %}
    {% endfor %}
</p>
{% endif %}
{% endmacro %}