R1:420f955c2ad8

Fix an incorrect file name

Summary: Self explanatory. This was broken in D11185.

Test Plan: `arc lint`

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11280