update glossary

content/zh/docs/reference/glossary/cluster-operator.md

@@ -1,5 +1,5 @@
 ---
-title: 集群操作者
+title: Cluster Operator（集群操作者）
 id: cluster-operator
 date: 2018-04-12
 full_link: 
@@ -35,6 +35,7 @@ tags:
 <!--
 Their primary responsibility is keeping a cluster up and running, which may involve periodic maintenance activities or upgrades.<br>
 
+			
 **NOTE:** Cluster operators are different from the [Operator pattern](https://coreos.com/operators) that extends the Kubernetes API.
 -->