Fix comment
Fix comment

Summary:
Copy-pasta comment said "after" when it should have said "before".

Test Plan: none

Auditors: alex

chirilo/perseus,daukantas/perseus,ariabuckles/perseus,iamchenxin/perseus,daukantas/perseus,ariabuckles/perseus,learningequality/perseus,ariabuckles/perseus,abe4mvp/perseus,ariabuckles/perseus,iamchenxin/perseus,alexristich/perseus,alexristich/perseus,abe4mvp/perseus,chirilo/perseus,sachgits/perseus,sachgits/perseus,learningequality/perseus