fix docs format error (#11936)

fix docs format error of https://v1-12.docs.kubernetes.io/zh/docs/reference/setup-tools/kubeadm/kubeadm-config/

content/zh/docs/reference/setup-tools/kubeadm/kubeadm-config.md

@@ -7,14 +7,14 @@ title: kubeadm config
 content_template: templates/concept
 weight: 50
 ---
-<!--
+
 {{% capture overview %}}
+<!--
 Beginning with v1.8.0, kubeadm uploads the configuration of your cluster to a ConfigMap called
 `kubeadm-config` in the `kube-system` namespace, and later reads the ConfigMap when upgrading.
 This enables correct configuration of system components, and provides a seamless user experience.
 -->
 
-{{%capture overview%}}
 从 v1.8.0 开始，kubeadm 将集群的配置上传到名为 kube-system 的 ConfigMap 对象中，对象位于 kube-system 命名空间内。并在以后的升级中读取这个 ConfigMap 配置对象。
 这样可以保证系统组件的正确配置，提供无缝的用户体验。
 
@@ -66,7 +66,6 @@ to list and pull the images that kubeadm requires.
 
 <!--
 * [kubeadm upgrade](/docs/reference/setup-tools/kubeadm/kubeadm-upgrade/) to upgrade a Kubernetes cluster to a newer version
-{{% /capture %}}
 -->
 
 *  [kubeadm upgrade](/docs/reference/setup-tools/kubeadm/kubeadm-upgrade/)将Kubernetes集群升级到更新版本[kubeadm upgrade]