Fix link to blog

Closes #30

app/keys_home/templates/keys_home/base.html

@@ -71,7 +71,7 @@
           <li class="footer-copy">Copyright 2020-{% now "Y" %}, Frank Sauerburger</li>
           <li><a href="https://sauerburger.com/">sauerburger.com</a></li>
           <li><a href="https://gitlab.sauerburger.com/">gitlab.sauerburger.com</a></li>
-          <li><a href="https://frank.sauerburger.com/">frank.sauerburger.io</a></li>
+          <li><a href="https://frank.sauerburger.io/">frank.sauerburger.io</a></li>
         </ul>
       </div>
       <div class="footer-center">