Merge branch 'jc/sign-off' into maint

Doc update. * jc/sign-off: SubmittingPatches: tighten wording on "sign-off" procedure

Junio C Hamano committed Feb 5, 2021 at 16:31 UTC 4fc7b2276f4faf210305cd5f129eedb6dbc84d10

No changes.