Documentation/contributing: Update sign-off procedure

The Linux kernel recently updated the wording of their sign-off
procedure, changing the ambiguous "real name" requirement to "a known
identity" and dropping "no pseudonyms". Anonymous contributions remain
uncommittable [1]. As discussed in the April 19, 2023 leadership
meeting, update our policy to go along with Linux and flashrom (who also
updated their policy).

[1] Linux kernel commit d4563201f3
(Documentation: simplify and clarify DCO contribution example language)

Change-Id: Ie676334f7c1509524adcb8dbb78495fb4da35ede
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74851
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions