Add information on supported version skew and upgrade order (#11060)

* Add information on supported version skew and upgrade order

* address comments

* added cloud-controller-manager

* format headers

content/en/docs/setup/independent/create-cluster-kubeadm.md

@@ -589,8 +589,10 @@ Due to that we can't see into the future, kubeadm CLI vX.Y may or may not be abl
 Example: kubeadm v1.8 can deploy both v1.7 and v1.8 clusters and upgrade v1.7 kubeadm-created clusters to
 v1.8.
 
-Please also check our [installation guide](/docs/setup/independent/install-kubeadm/#installing-kubeadm-kubelet-and-kubectl)
-for more information on the version skew between kubelets and the control plane.
+These resources provide more information on supported version skew between kubelets and the control plane, and other Kubernetes components:
+
+* Kubernetes [version and version-skew policy](/docs/setup/version-skew-policy/)
+* Kubeadm-specific [installation guide](/docs/setup/independent/install-kubeadm/#installing-kubeadm-kubelet-and-kubectl)
 
 ## kubeadm works on multiple platforms {#multi-platform}
 

content/en/docs/setup/independent/install-kubeadm.md

@@ -119,8 +119,10 @@ This is because kubeadm and Kubernetes require
 [special attention to upgrade](/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade-1-11/).
 {{</ warning >}}
 
-For more information on version skews, please read our
-[version skew policy](/docs/setup/independent/create-cluster-kubeadm/#version-skew-policy).
+For more information on version skews, see:
+
+* Kubernetes [version and version-skew policy](/docs/setup/version-skew-policy/)
+* Kubeadm-specific [version skew policy](/docs/setup/independent/create-cluster-kubeadm/#version-skew-policy)
 
 {{< tabs name="k8s_install" >}}
 {{% tab name="Ubuntu, Debian or HypriotOS" %}}