[DOC] improve zk digest doc (#11703)

docs/docs/en/architecture/configuration.md

@@ -173,7 +173,7 @@ The default configuration is as follows:
 |registry.zookeeper.session-timeout|30s|session timeout|
 |registry.zookeeper.connection-timeout|30s|connection timeout|
 |registry.zookeeper.block-until-connected|600ms|waiting time to block until the connection succeeds|
-|registry.zookeeper.digest|~|digest of zookeeper|
+|registry.zookeeper.digest|{username}:{password}|digest of zookeeper to access znode, works only when acl is enabled, for more details please check [https://zookeeper.apache.org/doc/r3.4.14/zookeeperAdmin.html](Apache Zookeeper doc) |
 
 Note that DolphinScheduler also supports zookeeper related configuration through `bin/env/dolphinscheduler_env.sh`.
 

docs/docs/zh/architecture/configuration.md

@@ -165,7 +165,7 @@ DolphinScheduler使用Zookeeper进行集群管理、容错、事件监听等功
 |registry.zookeeper.session-timeout|30s|session超时时间|
 |registry.zookeeper.connection-timeout|30s|连接超时时间|
 |registry.zookeeper.block-until-connected|600ms|阻塞直到连接成功的等待时间|
-|registry.zookeeper.digest|~|Zookeeper使用的digest|
+|registry.zookeeper.digest|{用户名:密码}|如果zookeeper打开了acl，则需要填写认证信息访问znode，认证信息格式为{用户名}:{密码}。关于Zookeeper ACL详见[https://zookeeper.apache.org/doc/r3.4.14/zookeeperAdmin.html](Apache Zookeeper官方文档)|
 
 DolphinScheduler同样可以通过`bin/env/dolphinscheduler_env.sh`进行Zookeeper相关的配置。