[dev.go2go] all: update/fix codereview.cfg

Change-Id: Icf1a6abc233298ab22fb0e9c3e3792ebd5ff1759
Reviewed-on: https://go-review.googlesource.com/c/go/+/295229
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
diff --git a/codereview.cfg b/codereview.cfg
index d21d2ff..4395884 100644
--- a/codereview.cfg
+++ b/codereview.cfg
@@ -1,2 +1,2 @@
-branch: dev.typeparams
-parent-branch: dev.regabi
+branch: dev.go2go
+parent-branch: master
\ No newline at end of file