[zh] Fix small typo in Namespaces documentation

content/zh-cn/docs/concepts/overview/working-with-objects/namespaces.md

@@ -1,5 +1,8 @@
 ---
 title: 名字空间
+api_metadata:
+- apiVersion: "v1"
+  kind: "Namespace"
 content_type: concept
 weight: 45
 ---
@@ -9,6 +12,9 @@ reviewers:
 - mikedanese
 - thockin
 title: Namespaces
+api_metadata:
+- apiVersion: "v1"
+  kind: "Namespace"
 content_type: concept
 weight: 45
 -->
@@ -16,7 +22,7 @@ weight: 45
 <!-- overview -->
 
 <!--
-In Kubernetes, _namespaces_ provides a mechanism for isolating groups of resources within a single cluster. Names of resources need to be unique within a namespace, but not across namespaces. Namespace-based scoping is applicable only for namespaced {{< glossary_tooltip text="objects" term_id="object" >}} _(e.g. Deployments, Services, etc)_ and not for cluster-wide objects _(e.g. StorageClass, Nodes, PersistentVolumes, etc)_.
+In Kubernetes, _namespaces_ provide a mechanism for isolating groups of resources within a single cluster. Names of resources need to be unique within a namespace, but not across namespaces. Namespace-based scoping is applicable only for namespaced {{< glossary_tooltip text="objects" term_id="object" >}} _(e.g. Deployments, Services, etc)_ and not for cluster-wide objects _(e.g. StorageClass, Nodes, PersistentVolumes, etc.)_.
 -->
 在 Kubernetes 中，**名字空间（Namespace）** 提供一种机制，将同一集群中的资源划分为相互隔离的组。
 同一名字空间内的资源名称要唯一，但跨名字空间时没有这个要求。