[zh] Update control-plane-flags.md

Signed-off-by: xin.li <xin.li@daocloud.io>

content/zh/docs/setup/production-environment/tools/kubeadm/control-plane-flags.md

@@ -47,9 +47,16 @@ kubeadm 目前不支持对 CoreDNS 部署进行定制。
 有关更多详细信息，请参阅[在 kubeadm 中使用 init phases](/zh/docs/reference/setup-tools/kubeadm/kubeadm-init/#init-phases).
 {{< /note >}}
 
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+{{< note >}}
+<!--
+To reconfigure a cluster that has already been created see
+[Reconfiguring a kubeadm cluster](/docs/tasks/administer-cluster/kubeadm/kubeadm-reconfigure).
+-->
 
-{{< feature-state for_k8s_version="1.12" state="stable" >}}
+要重新配置已创建的集群，请参阅[重新配置 kubeadm 集群](/zh/docs/tasks/administer-cluster/kubeadm/kubeadm-reconfigure)。
+{{< /note >}}
+
+<!-- body -->
 
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 ## Customizing the control plane with flags in `ClusterConfiguration`