Documentation/process: Change Microsoft contact for embargoed hardware issues

Update Microsoft contact from Sasha to James.

Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: James Morris <jmorris@namei.org>
Link: https://lore.kernel.org/r/alpine.LRH.2.21.2002061006350.22130@namei.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>