/usr/share/doc/unburden-home-dir/html/footer.html is in unburden-home-dir-doc 0.4.0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23  | <footer>
  {% if next_page or previous_page %}
    <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
      {% if next_page %}
        <a href="{{ next_page.url }}" class="btn btn-neutral float-right" title="{{ next_page.title }}">Next <span class="icon icon-circle-arrow-right"></span></a>
      {% endif %}
      {% if previous_page %}
        <a href="{{ previous_page.url }}" class="btn btn-neutral" title="{{ previous_page.title }}"><span class="icon icon-circle-arrow-left"></span> Previous</a>
      {% endif %}
    </div>
  {% endif %}
  <hr/>
  <div role="contentinfo">
    <!-- Copyright etc -->
    {% if copyright %}
      <p>{{ copyright }}</p>
    {% endif %}
  </div>
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</footer>
 |