replace reference to git patch formatting guidelines with our own.

The page was done a while ago, but the link was stale

diff --git a/index.mdwn b/index.mdwn
index 943c56d355ba9b5c460706c79e7234603a1dc51e..d04edafdb28ac2cd8b56272d0e88258be97f4602 100644 (file)
--- a/index.mdwn
+++ b/index.mdwn
@@ -79,8 +79,7 @@ list](http://notmuchmail.org/mailman/listinfo/notmuch-commits) to watch
 every commit made to notmuch and the notmuchmail.org web site.
 
 Patches are most welcome and should be sent to notmuch@notmuchmail.org.
-Please try to follow the [patch submission guidelines of the Git
-project](http://repo.or.cz/w/git.git?a=blob;f=Documentation/SubmittingPatches;hb=HEAD)
+Please try to follow the [[patch submission guidelines|patchformatting]]
 when submitting patches to notmuch. We are currently test-driving a [Patchwork
 instance](http://patchwork.notmuchmail.org/project/notmuch) to help us keep track
 of [the patches](http://patchwork.notmuchmail.org/project/notmuch/list).