<footer class="siteFooter">
  <p>
    &copy; {{ site.time | date: '%Y' }} {{ site.author.name | append: '.'}}
    Hosted on <a href="http://github.com">GitHub</a> and powered by <a href="http://jekyllrb.com/">Jekyll</a>.
  </p>
</footer>

<footer class="siteFooter">
  <p>
    &copy; {{ site.time | date: '%Y' }} {{ site.author.name | append: '.'}}
    Hosted on <a href="https://github.com">GitHub</a> and powered by <a href="http://jekyllrb.com/">Jekyll</a>.
  </p>
</footer>

Replace `http` with `https` in GitHub URL
Replace `http` with `https` in GitHub URL
