update kubeadm prerequisites

content/en/docs/reference/command-line-tools-reference/feature-gates/node-swap.md

@@ -13,6 +13,10 @@ stages:
   - stage: beta
     defaultValue: false
     fromVersion: "1.28"
+    toVersion: "1.29"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.30"
 ---
 Enable the kubelet to allocate swap memory for Kubernetes workloads on a node.
 Must be used with `KubeletConfiguration.failSwapOn` set to false.

content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md

@@ -27,8 +27,7 @@ see the [Creating a cluster with kubeadm](/docs/setup/production-environment/too
 * Unique hostname, MAC address, and product_uuid for every node. See [here](#verify-mac-address) for more details.
 * Certain ports are open on your machines. See [here](#check-required-ports) for more details.
 * Swap configuration. The default behavior of a kubelet was to fail to start if swap memory was detected on a node.
-  Swap has been supported since v1.22. And since v1.28, Swap is supported for cgroup v2 only; the NodeSwap feature
-  gate of the kubelet is beta but disabled by default.
+  See [Swap memory management](/docs/concepts/architecture/nodes/#swap-memory) for more details.
   * You **MUST** disable swap if the kubelet is not properly configured to use swap. For example, `sudo swapoff -a`
     will disable swapping temporarily. To make this change persistent across reboots, make sure swap is disabled in
     config files like `/etc/fstab`, `systemd.swap`, depending how it was configured on your system.