Fix outdated link to MetaMTA web UI in MetaMTA tasks

Summary: Missed this when moving most MetaMTA responsibilities to the CLI. Show the correct command to get data rather than linking to a 404.

Test Plan: {F56733}

Reviewers: wez, btrahan, chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6846

src/applications/metamta/PhabricatorMetaMTAWorker.php

@@ -43,9 +43,10 @@ final class PhabricatorMetaMTAWorker
 
   public function renderForDisplay() {
     return phutil_tag(
-      'a',
-      array('href' => '/mail/view/'.$this->getTaskData().'/'),
-      $this->getTaskData());
+      'pre',
+      array(
+      ),
+      'phabricator/ $ ./bin/mail show-outbound --id '.$this->getTaskData());
   }
 
 }

src/applications/metamta/management/PhabricatorMailManagementShowOutboundWorkflow.php

@@ -90,7 +90,7 @@ final class PhabricatorMailManagementShowOutboundWorkflow
         $info[] = null;
         $info[] = pht('ATTACHMENTS');
         foreach ($attachments as $attachment) {
-          $info[] = $attachment['filename'];
+          $info[] = idx($attachment, 'filename', pht('Unnamed File'));
         }
       }