Documentation/mb/lenovo/t4xx_series: Change "Steps to access the flash IC" to sub-heading
This heading should not be a top-level heading, because it's not at the
top of the file.
Also remove the trailing colon, because it's unnecessary in a heading.
Change-Id: I0685bb8734ad899c29618d24c0497e4fb8c0d01c
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/28826
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>