Documentation link

Author: sharonmleon

_includes/partials/header.html

@@ -8,7 +8,7 @@
     <nav>
       <ul>
         <li class="home"><a href="/" aria-label="Home"><img src="/assets/images/pressforward-icon.svg" width="41" height="32" alt=""><span>PressForward</span></a></li>
-        <li><a href="https://pressforwardadmin.gitbooks.io/pressforward-documentation/content/">Docs</a></li>
+        <li><a href="https://github.com/PressForward/pressforward/wiki">Docs</a></li>
         <li><a href="/blog/">Blog</a></li>
         <li><a href="/credits/">Credits</a></li>
       </ul>