Update index.html

added img no alt

Author: stevefaulkner

index.html

@@ -925,6 +925,26 @@ <h2 id="docconformance">
 </p>
 </td>
 </tr>
+<tr id="img-n0-alt" tabindex="-1">
+<td>
+<code><a>img</a> with no <a data-cite=
+"html/embedded-content.html#attr-img-alt">alt</a>=""</code>
+</td>
+<td>
+<code>role=<a href="#index-aria-img">img</a></code>
+</td>
+<td>
+<p>
+<strong>Any</strong> `role`
+<span class="changed-feature">(changed)</span>
+</p>
+<p>
+<a href="#index-aria-global">global `aria-*` attributes</a> and
+any `aria-*` attributes applicable to the allowed roles and
+implied role (if any)
+</p>
+</td>
+</tr>
 <tr id="input-button" tabindex="-1">
 <td>
 <code>input type=<a data-cite=