Merge pull request #22760 from gaoguangze111/update-overview-components

Update chinese description in overview-components.md

content/zh/docs/concepts/overview/components.md

@@ -1,6 +1,8 @@
 ---
 title: Kubernetes 组件
 content_type: concept
+description: >
+  Kubernetes 集群由代表控制平面的组件和一组称为节点的机器组成。
 weight: 20
 card:
   name: concepts
@@ -12,6 +14,9 @@ reviewers:
 - lavalamp
 title: Kubernetes Components
 content_type: concept
+description: >
+  A Kubernetes cluster consists of the components that represent the control plane
+  and a set of machines called nodes
 weight: 20
 card:
   name: concepts
@@ -233,4 +238,3 @@ saving container logs to a central log store with search/browsing interface.
 * 进一步了解 [Nodes](/docs/concepts/architecture/nodes/)
 * 进一步了解 [kube-scheduler](/docs/concepts/scheduling/kube-scheduler/)
 * 阅读 etcd 官方[文档](https://etcd.io/docs/)
-