Change Macro icon to file-image-o

Summary: Changes icon

Test Plan: Load up Macro, see new icon.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11509

src/applications/macro/application/PhabricatorMacroApplication.php

@@ -19,7 +19,7 @@ final class PhabricatorMacroApplication extends PhabricatorApplication {
   }
 
   public function getFontIcon() {
-    return 'fa-smile-o';
+    return 'fa-file-image-o';
   }
 
   public function getTitleGlyph() {