Use ticket hook in downtime details

modules/monitoring/application/views/scripts/downtime/show.phtml

@@ -45,7 +45,7 @@
       </tr>
       <tr title="<?= $this->translate('A comment, as entered by the author, associated with the scheduled downtime'); ?>">
         <th><?= $this->translate('Comment') ?></th>
-        <td><?= $this->nl2br($this->markdown($this->downtime->comment)) ?></td>
+        <td><?= $this->nl2br($this->createTicketLinks($this->markdown($downtime->comment))) ?></td>
       </tr>
     </tbody>
   </table>