OSDOCS-7068: Conceptual info for cgroup v2 as new 4.14 default

Author: Daniel Chadwick

nodes/clusters/nodes-cluster-cgroups-2.adoc

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 toc::[]
 
-By default, {product-title} uses  link:https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1.html[Linux control group version 1] (cgroup v1) in your cluster. You can switch to link:https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html[Linux control group version 2] (cgroup v2), if needed, by editing the `node.config` object. Enabling cgroup v2 in {product-title} disables all cgroup version 1 controllers and hierarchies in your cluster. 
+By default, {product-title} uses link:https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html[Linux control group version 2] (cgroup v2) in your cluster. You can switch to link:https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/index.html[Linux control group version 1] (cgroup v1), if needed, by editing the `node.config` object. Enabling cgroup v1 in {product-title} disables all cgroup version 2 controllers and hierarchies in your cluster. 
 
-cgroup v2 is the next version of the Linux cgroup API. cgroup v2 offers several improvements over cgroup v1, including a unified hierarchy, safer sub-tree delegation, new features such as link:https://www.kernel.org/doc/html/latest/accounting/psi.html[Pressure Stall Information], and enhanced resource management and isolation. 
+cgroup v2 offers several improvements over cgroup v1, including a unified hierarchy, safer sub-tree delegation, new features (such as link:https://www.kernel.org/doc/html/latest/accounting/psi.html[Pressure Stall Information]), and enhanced resource management and isolation. 
 
 // The following include statements pull in the module files that comprise
 // the assembly. Include any combination of concept, procedure, or reference