board-status.html: improve instructions

The foreword mentioned that you need a gerrit account, but not how to
have git push with the right credentials.
To ease onboarding, point out where to get them.

Change-Id: I0b022bc064e3bc89568617c1a3a3e0e5236ba520
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/29240
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions