Fix tutorial link taking you to localhost

Updated the link to match the tutorial href on the nav bar

Author: stoneG

misc/site/index.html

@@ -70,7 +70,7 @@ <h1 class="text-center">Angular UI Grid</h1>
             Download <small>( <%= version %> )</small>
           </a>
 
-          <a class="btn btn-success btn-large" href="http://<%= site %>/docs/#/tutorial" title="Tutorial">
+          <a class="btn btn-success btn-large" href="/docs/#/tutorial" title="Tutorial">
             <i class="fa fa-book fa-fw"></i>
             Tutorial
           </a>