R1:e11c5486c92b

Fix typo in PhortuneMerchant.php

Summary: Closes T15429

Test Plan: Look at the string.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: speck, tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Maniphest Tasks: T15429

Differential Revision: https://we.phorge.it/D25261