fix example navbar brand

docs/javascript.html

@@ -504,7 +504,7 @@ $('.dropdown-toggle').dropdown()
             <div id="navbarExample" class="navbar navbar-static">
               <div class="navbar-inner">
                 <div class="container" style="width: auto;">
-                  <a class="brand" href="#">Project Name</a>
+                  <a class="navbar-brand" href="#">Project Name</a>
                   <ul class="nav">
                     <li><a href="#fat">@fat</a></li>
                     <li><a href="#mdo">@mdo</a></li>