Fix typo in chromeos/crosapi/mojom/OWNERS

It should be "_mojom_traits" not ".mojom_traits". The latter does not
match any files.

Bug: None
Change-Id: I039826848ad264a9437a22ec6bd314cc37aec67b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639397
Auto-Submit: James Cook <jamescook@chromium.org>
Commit-Queue: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845156}

chromeos/crosapi/mojom/OWNERS

@@ -12,6 +12,6 @@ per-file *.mojom=file://chromeos/SECURITY_OWNERS
 per-file *.mojom=file://ipc/SECURITY_OWNERS
 
 per-file *_mojom_traits*.*=set noparent
-per-file *.mojom_traits*.*=file://chromeos/LACROS_OWNERS
-per-file *.mojom_traits*.*=file://chromeos/SECURITY_OWNERS
+per-file *_mojom_traits*.*=file://chromeos/LACROS_OWNERS
+per-file *_mojom_traits*.*=file://chromeos/SECURITY_OWNERS
 per-file *_mojom_traits*.*=file://ipc/SECURITY_OWNERS