fix broken marketing section with updated class

docs/javascript.html

@@ -622,7 +622,7 @@ $('[data-spy="scroll"]').each(function () {
 
           <h2>Example tabs</h2>
           <p>Add quick, dynamic tab functionality to transition through panes of local content, even via dropdown menus.</p>
-          <div class="bs-docs-example">
+          <div class="bs-docs-example bs-docs-example-tabs">
             <ul id="myTab" class="nav nav-tabs">
               <li class="active"><a href="#home" data-toggle="tab">Home</a></li>
               <li><a href="#profile" data-toggle="tab">Profile</a></li>