R1:bdfbad092b05

Fix an issue with Auth edit 404ing

Summary: Fixes T6971. This parameter got updated slightly wrong.

Test Plan: Edited an auth provider.

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6971

Differential Revision: https://secure.phabricator.com/D11392