hugo-theme-introduction/layouts/partials/blog/li.html

{{ range .Pages.ByPublishDate.Reverse }}
    <li class="post-item">
        <span><a href="{{ .Permalink }}">{{ .Title }}</a></span>{{ if .Params.date }} - <span>{{ .Date.Format (.Site.Params.dateFormat | default "Jan 02, 2006") }}</span>{{ end }}
    </li>
{{ end }}