docs/cgroup: add entry for misc.events

Added descriptions of misc.events.

Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Chunguang Xu 2021-09-17 20:44:16 +08:00 • committed by Tejun Heo
commit 4b53bb873f