Remove empty table row in named color index (mdn#42820)

Removed an unnecessary table row from the named color reference.

Co-authored-by: Chris Mills <chrisdavidmills@gmail.com>

Author: Bishops-exe

files/en-us/web/css/reference/values/named-color/index.md

@@ -882,7 +882,6 @@ In addition to these 16 colors, about 150 other colors have a keyword associated
       <td><code>#9acd32</code></td>
       <td style="background: yellowgreen"></td>
     </tr>
-    <tr>
   </tbody>
 </table>