decentralized-id.github.io/_includes/authors-list.html

<p class="page__taxonomy">
    <strong><i class="fas fa-fw fa-users" aria-hidden="true"></i> Authors:</strong>
    {% assign authorCount = page.authors | size %}
    {% if authorCount == 0 %}
        No author
    {% elsif authorCount == 1 %}
        {{ page.authors | first }}
    {% else %}
        {% for author in page.authors %}
            {% if forloop.first %}
            <a href="{{ author.url }}" rel="author">{{ author }}</a>
            {% elsif forloop.last %}
                and <a href="{{ author.url }}" rel="author">{{ author }}</a>
            {% else %}
                , <a href="{{ author.url }}" rel="author">{{ author }}</a>
            {% endif %}
        {% endfor %}
    {% endif %}
</p>