A typo in the .json file made this format unavailable.

Bug: angleproject:2357
Change-Id: I3214c6d8a00d9fa731573347b06bded8fb57a918
Reviewed-on: https://chromium-review.googlesource.com/c/1359619
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>