The pro_3500_series was converted to a variant to include the Pro 3400, so rename the corresponding documentation.
Change-Id: I5977f223d6f004a801e163397d1c97febd7ee1d4
Signed-off-by: Vesek <venda.straka@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85846
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>