chore: hide docs until fix style issues

Author: tomghuang

_includes/header.html

@@ -41,7 +41,7 @@
         <ul class="nav nav-pills pull-right">
             <li><a href="/">HOME</a></li>
             <li><a href="/tutorial">TUTORIAL</a></li>
-            <li><a href="/docs">DOCUMENTATION</a></li>
+            <!-- <li><a href="/docs">DOCUMENTATION</a></li> -->
             <li><a href="https://github.com/argtable/argtable3">CODE</a></li>
         </ul>
     </div>