autotest: Add per-file OWNERS for faft docs

Allow the FAFT TL to edit the FAFT docs.

BUG=None
TEST=None

Change-Id: Ie113858c9d3370c8fe611f9566d3e83dca78555c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2988483
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Tested-by: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Derek Beckett <dbeckett@chromium.org>
diff --git a/docs/OWNERS b/docs/OWNERS
new file mode 100644
index 0000000..860704f
--- /dev/null
+++ b/docs/OWNERS
@@ -0,0 +1,2 @@
+# FAFT TL
+per-file faft* = jbettis@chromium.org