"Project Managers" in the credits is incorrectly pluralized

The bug

The category containing the manager Isabella Balk under Mojang is titled Project Managers, and is incorrectly pluralized, as there is only one manager with that title.

Here is a part of the credits that demonstrates the bug:

Project Managers
   Isabella Balk

Project Managers
   Isabella Balk

Fix

The title should be Project Manager to be consistent with other titles that contain only one person.

Project Manager
   Isabella Balk

Project Manager
   Isabella Balk

I am going to attach a resource pack with the fix for this issue.