[RFA] - Improve suggestions for generating patches in CONTRIBUTE

[Siva Chandra]

Joel> I told Siva that this was considered documentation, and therefore
Joel> needed your approval for going in. Otherwise, I'm happy to approve :).

Eli> Anyway, the change was a rather mechanical one and didn't really touch
Eli> any text otherwise, so it doesn't need my approval.  But I've read the
Eli> diffs now, and I'm OK with them.

Thank you. Committed now.

/Siva Chandra