docs: cgroup-v1: use code block for locking order schema

The locking order schema is a figure (like diagram), which should have
been formatted with literal code block for consistency with other
figures.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Bagas Sanjaya 2023-01-05 20:16:28 +07:00 • committed by Tejun Heo
commit eb08489448