Merge pull request Snailclimb#1933 from xsg22/patch-2

[docs update]完善zookeeper的get命令用例信息

Author: Snailclimb

docs/distributed-system/distributed-process-coordination/zookeeper/zookeeper-in-action.md

@@ -70,6 +70,7 @@ Created /node1/node1.1
 `get` 命令可以获取指定节点的数据内容和节点的状态,可以看出我们通过 `set` 命令已经将节点数据内容改为 "set node1"。
 
 ```shell
+[zk: zookeeper(CONNECTED) 12] get -s /node1
 set node1
 cZxid = 0x47
 ctime = Sun Jan 20 10:22:59 CST 2019