hugo-academic/layouts/partials/section_pager.html

<nav>
  <ul class="pager">
    {{if .PrevInSection}}
    <li class="previous"><a href="{{.PrevInSection.Permalink}}"><span
      aria-hidden="true">&larr;</span> {{.PrevInSection.Title}}</a></li>
    {{end}}

    {{if .NextInSection}}
    <li class="next"><a href="{{.NextInSection.Permalink}}">{{.NextInSection.Title}} <span
      aria-hidden="true">&rarr;</span></a></li>
    {{end}}
  </ul>
</nav>