git-codereview: add TODO about go1.5.txt not needing review

Change-Id: Id0c73d56cc0cba8fbe5e67fb31ec5f96cbfb9d61
Reviewed-on: https://go-review.googlesource.com/2010
Reviewed-by: Russ Cox <rsc@golang.org>
diff --git a/git-codereview/submit.go b/git-codereview/submit.go
index 5c5915e..61189e9 100644
--- a/git-codereview/submit.go
+++ b/git-codereview/submit.go
@@ -6,7 +6,7 @@
 
 import "time"
 
-// TODO(rsc): Add -tbr.
+// TODO(rsc): Add -tbr, along with standard exceptions (doc/go1.5.txt)
 
 func submit(args []string) {
 	expectZeroArgs(args, "submit")