Update html-aam/index.html

Author: scottaohara

html-aam/index.html

@@ -9374,7 +9374,7 @@ <h4 id="att-command">`command`</h4>
             </tr>
             <tr>
               <th>Element(s)</th>
-              <td><a data-cite="html/popover.html#attr-command">`button`</a>;</td>
+              <td><a data-cite="html/form-elements.html#attr-button-command">`button`</a>;</td>
             </tr>
             <tr>
               <th>[[WAI-ARIA-1.2]]</th>