poor implementations of the components interfacing with systemd of current
container managers.
-Before you read on, please make sure you read the low-level [kernel
-documentation about
-cgroup v2](https://www.kernel.org/doc/Documentation/cgroup-v2.txt). This
-documentation then adds in the higher-level view from systemd.
+Before you read on, please make sure you read the low-level kernel
+documentation about the
+[unified cgroup hierarchy](https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html).
+This document then adds in the higher-level view from systemd.
This document augments the existing documentation we already have: