address #1722 by finishing incomplete sentence on responsive

docs/scaffolding.html

@@ -381,7 +381,7 @@
       <ol>
         <li>Use the compiled responsive version, bootstrap-responsive.css</li>
         <li>Add @import "responsive.less" and recompile Bootstrap</li>
-        <li>Modify and recompile responsive.less as a separate</li>
+        <li>Modify and recompile responsive.less as a separate file</li>
       </ol>
       <p><strong>Why not just include it?</strong> Truth be told, not everything needs to be responsive. Instead of encouraging developers to remove this feature, we figure it best to enable it.</p>
     </div>

docs/templates/pages/scaffolding.mustache

@@ -305,7 +305,7 @@
       <ol>
         <li>{{_i}}Use the compiled responsive version, bootstrap-responsive.css{{/i}}</li>
         <li>{{_i}}Add @import "responsive.less" and recompile Bootstrap{{/i}}</li>
-        <li>{{_i}}Modify and recompile responsive.less as a separate{{/i}}</li>
+        <li>{{_i}}Modify and recompile responsive.less as a separate file{{/i}}</li>
       </ol>
       <p>{{_i}}<strong>Why not just include it?</strong> Truth be told, not everything needs to be responsive. Instead of encouraging developers to remove this feature, we figure it best to enable it.{{/i}}</p>
     </div>