Fix Releeph application icon

Summary: Fixes T3546. The Application just used an outdated method name. Use the modern method name.

Test Plan: {F50319}

Reviewers: btrahan, edward, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T3546

Differential Revision: https://secure.phabricator.com/D6471

src/applications/releeph/application/PhabricatorApplicationReleeph.php

@@ -14,7 +14,7 @@ final class PhabricatorApplicationReleeph extends PhabricatorApplication {
     return '/releeph/';
   }
 
-  public function getAutospriteName() {
+  public function getIconName() {
     return 'releeph';
   }