Sections may not start with transitions. Remove them.
This fixes the following Sphinx error:
ERROR: Document or section may not begin with a transition.
Change-Id: I519af83df14e44b0709dee7e338dba1ee6413f0a
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77440
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
