[zh-cn] resync /glossary/extensions.md

content/zh-cn/docs/reference/glossary/extensions.md

@@ -2,7 +2,7 @@
 title: 扩展组件（Extensions）
 id: Extensions
 date: 2019-02-01
-full_link: /zh-cn/docs/concepts/extend-kubernetes/extend-cluster/#extensions
+full_link: /zh-cn/docs/concepts/extend-kubernetes/#extensions
 short_description: >
   扩展组件是扩展并与 Kubernetes 深度集成以支持新型硬件的软件组件。
 aka:
@@ -15,7 +15,7 @@ tags:
 title: Extensions
 id: Extensions
 date: 2019-02-01
-full_link: /docs/concepts/extend-kubernetes/extend-cluster/#extensions
+full_link: /docs/concepts/extend-kubernetes/#extensions
 short_description: >
   Extensions are software components that extend and deeply integrate with Kubernetes to support new types of hardware.
 
@@ -32,10 +32,9 @@ tags:
 <!--more-->
 
 <!--
-Many cluster administrators use a hosted or distribution instance of Kubernetes. These clusters come with extensions pre-installed. As a result, most Kubernetes users will not need to install [extensions](/docs/concepts/extend-kubernetes/extend-cluster/#extensions) and even fewer users will need to author new ones.
+Many cluster administrators use a hosted or distribution instance of Kubernetes. These clusters come with extensions pre-installed. As a result, most Kubernetes users will not need to install [extensions](/docs/concepts/extend-kubernetes/) and even fewer users will need to author new ones. 
 -->
 
 许多集群管理员会使用托管的 Kubernetes 或其某种发行包，这些集群预装了扩展。
-因此，大多数 Kubernetes 用户将不需要
-安装[扩展组件](/zh-cn/docs/concepts/extend-kubernetes/extend-cluster/#extensions)，
+因此，大多数 Kubernetes 用户将不需要安装[扩展组件](/zh-cn/docs/concepts/extend-kubernetes/)，
 需要编写新的扩展组件的用户就更少了。

content/zh-cn/docs/reference/glossary/garbage-collection.md

@@ -35,14 +35,15 @@ tags:
 <!--more-->
 
 <!-- 
-Kubernetes uses garbage collection to clean up resources like [unused containers and images](/docs/concepts/workloads/controllers/garbage-collection/#containers-images),
+Kubernetes uses garbage collection to clean up resources like
+[unused containers and images](/docs/concepts/architecture/garbage-collection/#containers-images),
 [failed Pods](/docs/concepts/workloads/pods/pod-lifecycle/#pod-garbage-collection),
 [objects owned by the targeted resource](/docs/concepts/overview/working-with-objects/owners-dependents/),
 [completed Jobs](/docs/concepts/workloads/controllers/ttlafterfinished/), and resources
 that have expired or failed.
 -->
 Kubernetes 使用垃圾收集机制来清理资源，例如：
-[未使用的容器和镜像](/zh-cn/docs/concepts/workloads/controllers/garbage-collection/#containers-images)、
+[未使用的容器和镜像](/zh-cn/docs/concepts/architecture/garbage-collection/#containers-images)、
 [失败的 Pod](/zh-cn/docs/concepts/workloads/pods/pod-lifecycle/#pod-garbage-collection)、
 [目标资源拥有的对象](/zh-cn/docs/concepts/overview/working-with-objects/owners-dependents/)、
 [已完成的 Job](/zh-cn/docs/concepts/workloads/controllers/ttlafterfinished/)、