Update index.html

fix code element

html-aria/index.html

@@ -722,7 +722,7 @@ <h2 id="docconformance">Document conformance requirements for use of ARIA attrib
     <TR id="ul" tabindex="-1">
       <TD><a href="https://www.w3.org/TR/html/grouping-content.html#the-ul-element"><code>ul</code></a>
       <TD><code>role=<a href="#index-aria-list">list</a></code></TD>
-      <TD><p>Role: <code><a href="#index-aria-directory">directory</a>, <a href="#index-aria-group">group</a>, <a href="#index-aria-listbox">listbox</a>, <a href="#index-aria-menu">menu</a>, <a href="#index-aria-menubar">menubar</a>, <a href="#index-aria-radiogroup">radiogroup</a></code> - <span class="changed-feature">(changed)</span>, <code><a href="#index-aria-tablist">tablist</a>, <a href="#index-aria-toolbar">toolbar</a>, <a href="#index-aria-tree">tree</a>, <a href="#index-aria-presentation">presentation</a></code> or <a href="#index-aria-none">none</a></code></p>
+      <TD><p>Role: <code><a href="#index-aria-directory">directory</a>, <a href="#index-aria-group">group</a>, <a href="#index-aria-listbox">listbox</a>, <a href="#index-aria-menu">menu</a>, <a href="#index-aria-menubar">menubar</a>, <a href="#index-aria-radiogroup">radiogroup</a></code> - <span class="changed-feature">(changed)</span>, <code><a href="#index-aria-tablist">tablist</a>, <a href="#index-aria-toolbar">toolbar</a>, <a href="#index-aria-tree">tree</a>, <a href="#index-aria-presentation">presentation</a></code> or <code><a href="#index-aria-none">none</a></code></p>
         <p><a href="#index-aria-global">global <code>aria-*</code> attributes</a> and any <code>aria-*</code> attributes applicable to the allowed roles and implied role (if any)</p></TD>
     </TR>
     <TR id="video" tabindex="-1">