[CentOS] Inconsistancy in RAID documentation

On the wiki page for creating a mirrored root drive, at
<https://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1>, it first
tells you, in the install, to chose manual partitioning, and to leave at
least 1M at the end of the drive.... and then it tells you to create the
RAID 1 using /dev/sda and /dev/sdb - the *whole* raw drives.

         mark, currently creating a RAID 1 using just the raw drives, no
partitions