Catbook_Mirror/_includes/footer.html

<footer class="footer">
  <div>
    &copy; {{ site.time | date: '%Y' }} {{ site.user.name }}.
    Powered by <a href="http://jekyllrb.com" target="_blank">Jekyll</a>.
    Get this theme
    <a href="https://github.com/EinHungerkuenstler/EinHungerkuenstler.github.io" target="_blank">here</a>.
  </div>
</footer>