clarify structure of responsive css file

docs/scaffolding.html

@@ -315,7 +315,7 @@
     </div>
     <div class="span8">
       <h2>Supported devices</h2>
-      <p>Bootstrap supports a handful of media queries to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:</p>
+      <p>Bootstrap supports a handful of media queries in a single file to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:</p>
       <table class="table table-bordered table-striped">
         <thead>
           <tr>

docs/templates/pages/scaffolding.mustache

@@ -239,7 +239,7 @@
     </div>
     <div class="span8">
       <h2>{{_i}}Supported devices{{/i}}</h2>
-      <p>{{_i}}Bootstrap supports a handful of media queries to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:{{/i}}</p>
+      <p>{{_i}}Bootstrap supports a handful of media queries in a single file to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:{{/i}}</p>
       <table class="table table-bordered table-striped">
         <thead>
           <tr>