we have supported rsvd hugetlb cgroup

Signed-off-by: lfbzhm <[email protected]>

Author: lifubang

docs/spec-conformance.md

@@ -8,7 +8,6 @@ The following features are not implemented yet:
 Spec version | Feature                                  | PR
 -------------|------------------------------------------|----------------------------------------------------------
 v1.1.0       | `SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV` | [#3862](https://github.com/opencontainers/runc/pull/3862)
-v1.1.0       | rsvd hugetlb cgroup                      | TODO ([#3859](https://github.com/opencontainers/runc/issues/3859))
 v1.1.0       | `.process.ioPriority`                    | [#3783](https://github.com/opencontainers/runc/pull/3783)