fix button group shadows, update js docs to fix alert js file link

docs/templates/pages/components.mustache

@@ -6,7 +6,7 @@
   <div class="subnav">
     <ul class="nav pills">
       <li><a href="#buttonGroups">{{_i}}Button groups{{/i}}</a></li>
-      <li><a href="#buttonDropdowns">{{_i}}Button dropdowns{{/i}}</a></li>
+      <li><a href="#comboButtons">{{_i}}Combo buttons{{/i}}</a></li>
       <li><a href="#navs">{{_i}}Nav, tabs, pills{{/i}}</a></li>
       <li><a href="#navbar">{{_i}}Navbar{{/i}}</a></li>
       <li><a href="#breadcrumbs">{{_i}}Breadcrumbs{{/i}}</a></li>
@@ -92,9 +92,9 @@
 
 <!-- Split button dropdowns
 ================================================== -->
-<section id="buttonDropdowns">
+<section id="comboButtons">
   <div class="page-header">
-    <h1>{{_i}}Split button dropdowns{{/i}} <small>{{_i}}Built on button groups to provide contextual menus{{/i}}</small></h1>
+    <h1>{{_i}}Combo buttons{{/i}} <small>{{_i}}Built on button groups to provide contextual dropdown menus{{/i}}</small></h1>
   </div>
   <div class="row">
     <div class="span4">

docs/templates/pages/javascript.mustache

@@ -807,7 +807,7 @@ $('a[data-toggle="tab"]').on('shown', function (e) {
         <div class="span3 columns">
           <h3>{{_i}}About alerts{{/i}}</h3>
           <p>{{_i}}The alert plugin is a tiny class for adding close functionality to alerts.{{/i}}</p>
-          <a href="../js/bootstrap-alerts.js" target="_blank" class="btn">{{_i}}Download{{/i}}</a>
+          <a href="../js/bootstrap-alert.js" target="_blank" class="btn">{{_i}}Download{{/i}}</a>
         </div>
         <div class="span9 columns">
           <h2>{{_i}}Example alerts{{/i}}</h2>