Clarify what's being hovered /cc @kkirsche

docs/_includes/css/forms.html

@@ -256,7 +256,7 @@
 
   <h3>Checkboxes and radios</h3>
   <p>Checkboxes are for selecting one or several options in a list, while radios are for selecting one option from many.</p>
-  <p>Disabled checkboxes and radios are supported, but to provide a "not-allowed" cursor on hover, you'll need to add the <code>.disabled</code> class to the parent <code>.radio</code>, <code>.radio-inline</code>, <code>.checkbox</code>, or <code>.checkbox-inline</code>.</p>
+  <p>Disabled checkboxes and radios are supported, but to provide a "not-allowed" cursor on hover of the parent <code>&lt;label&gt;</code>, you'll need to add the <code>.disabled</code> class to the parent <code>.radio</code>, <code>.radio-inline</code>, <code>.checkbox</code>, or <code>.checkbox-inline</code>.</p>
   <h4>Default (stacked)</h4>
   <div class="bs-example" data-example-id="block-checkboxes-radios">
     <form>