Format CfM Owners-Override

Bug: 481415152

Change-Id: I508dd03b63e5f40b2272732ebb0a2291d4cd6389
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/+/7571483
Reviewed-by: Niko Tsirakis <ntsirakis@google.com>

project.config

diff --git a/project.config b/project.config
index 9d9cc4d..1bc41ed 100644
--- a/project.config
+++ b/project.config
@@ -120,7 +120,7 @@
 	submit = group chromeos-ci-release-bot-mpa
 [access "^refs/heads/factory-(gale|mistral)-.*"]
 	label-Code-Review = -2..+2 group mdb/jetstream-chromeos-full-committers
-[access "refs/heads/stabilize-cfm-16503.60.B.*"]
+[access "^refs/heads/stabilize-cfm-16503\\.60\\.B.*"]
         label-Owners-Override = +0..+1 group mdb/meet-devices-onduty-team
 [access "refs/for/*"]
 	addPatchSet = group chromeos-committer-approvers