Validate the code

This module does not validate. To fix this, do not close the li that the sub-ul falls under until after the sub-ul close tag. E.g.:

<ul>
 <li>Item 1</li>
 <li>Item 2
  <ul>
   <li>Item 2.a</li>
   <li>Item 2.b
    <ul>
     <li>Item 2.b.i</li>
     <li>Item 2.b.ii</li>
    </ul>
   </li>
   <li>Item 2.c</li>
  </ul>
 </li>
</ul>