Update page footer include

Changes hosting credit to GitHub Pages

Author: delphidabbler

Diff for: _includes/footer.html

@@ -17,7 +17,7 @@
 
   <div class="pagefoot-credits">
     <p class="strong">
-      Web hosting generously donated by <a href="https://www.creohosting.com/">Creo Hosting</a>.
+      Website hosted by GitHub Pages.
     </p>
     <p>
       <span role="license" class="hidden-xs">Website content licensed under the Creative Commons Attribution 4.0 International (<a href="{{ site.data.core.cc-40-url }}" aria-label="{{ site.data.core.cc-40-link-title }}">CC BY-4.0</a>) license.</span> For full details of license, copyright and 3rd party code see the <a href="{{ site.data.core.credits-link }}" aria-label="{{ site.data.core.credits-link-title }}">license &amp; credits page</a>.