Fix filename spelling.

Removes typo introduced in http://review.skia.org/764518

Bug: b/40043485
Bug: b/293490566
Change-Id: Ic28ac247ad8e2126f7d5d69f642bd3410d9e8ddd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/764896
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
1 file changed