btrfs-progs: docs: update mkfs blockgroup description

- add raid1c34
- add utilization to the overview table
- wording updates

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-11-15 16:14:50 +01:00
parent 95117cbd4a
commit 899977cd18