Don't require memes to be at the end of a line

Summary: Fixes T7893.

Test Plan: {F395543}

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7893

Differential Revision: https://secure.phabricator.com/D12752

src/applications/macro/markup/PhabricatorMemeRemarkupRule.php

@@ -10,7 +10,7 @@ final class PhabricatorMemeRemarkupRule extends PhutilRemarkupRule {
 
   public function apply($text) {
     return preg_replace_callback(
-      '@{meme,((?:[^}\\\\]+|\\\\.)+)}$@m',
+      '@{meme,((?:[^}\\\\]+|\\\\.)+)}@m',
       array($this, 'markupMeme'),
       $text);
   }