Edit Project Config

Change-Id: I32dde3edbfc0e8ca81ca62510c9398e7d9da04c5
Reviewed-on: https://go-review.googlesource.com/78090
Reviewed-by: Russ Cox <rsc@golang.org>

project.config

diff --git a/project.config b/project.config
index 75b1e31..baa99f4 100644
--- a/project.config
+++ b/project.config
@@ -107,3 +107,6 @@
 	header = to
 [access "refs/for/*"]
 	addPatchSet = group Registered Users
+[commitmessage]
+	maxSubjectLength = 1000
+	maxLineLength = 1000