kubeadm: update references of "master" label/taint for 1.24

In 1.24 kubeadm will:
- stop using the "master" label on CP nodes.
- start tainting CP nodes with both "master" and "control-plane" taints.

In 1.25 the "master" taint will be removed.

Adjust references of the "master" label/taint to the above.

content/en/docs/reference/setup-tools/kubeadm/implementation-details.md

@@ -318,11 +318,12 @@ Please note that:
 
 As soon as the control plane is available, kubeadm executes following actions:
 
-- Labels the node as control-plane with `node-role.kubernetes.io/master=""`
-- Taints the node with `node-role.kubernetes.io/master:NoSchedule`
+- Labels the node as control-plane with `node-role.kubernetes.io/control-plane=""`
+- Taints the node with `node-role.kubernetes.io/master:NoSchedule` and `node-role.kubernetes.io/control-plane:NoSchedule`
 
 Please note that:
 
+1. The `node-role.kubernetes.io/master` taint is deprecated and will be removed in kubeadm version 1.25
 1. Mark control-plane phase phase can be invoked individually with the [`kubeadm init phase mark-control-plane`](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-mark-control-plane) command
 
 ### Configure TLS-Bootstrapping for node joining

content/en/docs/reference/setup-tools/kubeadm/kubeadm-init-phase.md

@@ -105,7 +105,7 @@ By default the certs and encryption key expire after two hours.
 
 ## kubeadm init phase mark-control-plane {#cmd-phase-mark-control-plane}
 
-Use the following phase to label and taint the node with the `node-role.kubernetes.io/master=""` key-value pair.
+Use the following phase to label and taint the node as a control plane node.
 
 {{< tabs name="tab-mark-control-plane" >}}
 {{< tab name="mark-control-plane" include="generated/kubeadm_init_phase_mark-control-plane.md" />}}