[zh] Add missing glossary for Chinese

There are some glossary entries still missing in the Chinese
localization. This PR adds them.

content/zh/docs/reference/glossary/endpoint.md

@@ -0,0 +1,36 @@
+---
+title: 端点（Endpoints）
+id: endpoints
+date: 2020-04-23
+full_link: 
+short_description: >
+  端点负责记录与服务（Service）的选择器相匹配的 Pods 的 IP 地址。
+
+aka:
+tags:
+- networking
+---
+ 端点负责记录与服务的{{< glossary_tooltip text="选择器" term_id="selector" >}}相匹配的 Pods 的 IP 地址。
+
+<!--
+title: Endpoints
+id: endpoints
+date: 2020-04-23
+full_link: 
+short_description: >
+  Endpoints track the IP addresses of Pods with matching Service selectors.
+
+aka:
+tags:
+- networking
+ Endpoints track the IP addresses of Pods with matching  {{< glossary_tooltip text="selectors" term_id="selector" >}}.
+-->
+
+<!--more-->
+<!--
+Endpoints can be configured manually for Services without selectors specified.
+The EndpointSlice resource provides a scalable and extensible alternative to Endpoints.
+-->
+端点可以手动配置到{{< glossary_tooltip text="服务（Service）" term_id="service" >}}上，而不必设置选择算符。
+{{< glossary_tooltip text="EndpointSlice" term_id="endpoint-slice" >}} 资源为 Endpoints
+提供了一种可伸缩、可扩展的替代方案。