[zh-cn] sync apiserver-aggregation cluster-cidr-v1alpha1

Signed-off-by: xin.li <[email protected]>

Author: my-git9

content/zh-cn/docs/concepts/extend-kubernetes/api-extension/apiserver-aggregation.md

@@ -30,12 +30,12 @@ The additional APIs can either be ready-made solutions such as a
 
 <!--
 The aggregation layer is different from
-[Custom Resources](/docs/concepts/extend-kubernetes/api-extension/custom-resources/),
+[Custom Resource Definitions](/docs/concepts/extend-kubernetes/api-extension/custom-resources/),
 which are a way to make the {{< glossary_tooltip term_id="kube-apiserver" text="kube-apiserver" >}}
 recognise new kinds of object.
 -->
 聚合层不同于
-[定制资源（Custom Resources）](/zh-cn/docs/concepts/extend-kubernetes/api-extension/custom-resources/)。
+[定制资源定义（Custom Resource Definitions）](/zh-cn/docs/concepts/extend-kubernetes/api-extension/custom-resources/)。
 后者的目的是让 {{< glossary_tooltip term_id="kube-apiserver" text="kube-apiserver" >}}
 能够识别新的对象类别（Kind）。