Update UI documents (#4950)

* for issue#4933 update ui documents

* for issue#4933 delete ui images file

docs/document/content/manual/sharding-ui/usage/config-center.cn.md

++++
+toc = true
+title = "配置中心"
+weight = 2
++++
+ 
+## 配置中心配置
+
+首先需要添加并激活配置中心。可以添加多个配置中心，但只能有一个处于激活状态，后面的规则配置功能是针对当前已激活的配置中心进行操作。
+目前提供Zookeeper的支持，后续会添加第三方配置中心的支持。
+
+## 规则配置
+
++ 添加激活配置中心后，可以获取当前配置中心中所有数据源的相关配置，包括数据分片，读写分离、Properties配置等。
+
++ 可以通过YAML格式对相关配置信息进行修改。
+
++ 点击 + 按钮可以添加新的数据源和分片规则。
\ No newline at end of file

docs/document/content/manual/sharding-ui/usage/config-center.en.md

++++
+toc = true
+title = "Config Center"
+weight = 2
++++
+
+## Config Center Configuration
+
+The config center needs to be added and activated first. Multiple centers can be added, but only one is active, and the following rule config operate on the currently active config center.
+Zookeeper support is provided now, and the support for other config centers will be added later.
+
+## Rule Config
+
++ After added and activated a config center, the configuration of all data sources in the current active config center can be obtained, including data sharding, read-write split, properties, and so on.
+
++ The configuration can be modified by the YAML format.
+
++ Click the + button to add a new data source and sharding rule.

docs/document/content/manual/sharding-ui/usage/registry-center.cn.md

 +++
 toc = true
 title = "注册中心"
-weight = 2
+weight = 3
 +++
 
 ## 注册中心配置
 
-首先需要添加并激活注册中心。可以添加多个注册中心，但只能有一个处于激活状态，后面的配置管理和编排治理功能都是针对当前已激活的注册中心进行操作。
+首先需要添加并激活注册中心。可以添加多个注册中心，但只能有一个处于激活状态，后面的运行状态功能都是针对当前已激活的注册中心进行操作。
 目前提供Zookeeper的支持，后续会添加第三方注册中心的支持。
 
-![Registry Center](https://shardingsphere.apache.org/document/current/img/sharding-ui/registry-center.png)
+## 运行状态
 
-## 配置管理
++ 添加激活注册中心后，可以查看当前注册中心所有运行实例信息。
 
-可以获取当前注册中心中所有数据源的相关配置，包括数据分片，读写分离、Properties配置等。
++ 可以通过操作按钮对运行实例进行熔断与恢复操作。
 
-![Configuration Management](https://shardingsphere.apache.org/document/current/img/sharding-ui/config-management.png)
-
-可以通过YAML格式对相关配置信息进行修改。
-
-![Configuration ditor](https://shardingsphere.apache.org/document/current/img/sharding-ui/config-edit.png)
-
-## 编排治理
-
-通过注册中心，可以进行熔断数据库访问程序对数据库的访问和禁用从库的操作。
-
-### 熔断实例
-可以查看当前运行实例信息，并进行熔断与恢复操作。
-
-![Circuit Breaker](https://shardingsphere.apache.org/document/current/img/sharding-ui/circuit-breaker.png)
-
-### 禁用从库
-
-可以查看所有从库信息，并进行从库禁用与恢复操作。
-
-![Disable Slave Database](https://shardingsphere.apache.org/document/current/img/sharding-ui/disable-slave-database.png)
++ 可以查看所有从库信息，并进行从库禁用与恢复操作。

docs/document/content/manual/sharding-ui/usage/registry-center.en.md

 +++
 toc = true
 title = "Registry Center"
-weight = 2
+weight = 3
 +++
 
 ## Registry Center Configuration
 
-The registry center needs to be added and activated first. Multiple registries can be added, but only one is active, and the following configuration management and orchestration operate on the currently active registry.
+The registry center needs to be added and activated first. Multiple registries can be added, but only one is active, and the following runtime status operate on the currently active registry.
 Zookeeper support is provided now, and the support for other registries will be added later.
 
-![Registry Center](https://shardingsphere.apache.org/document/current/img/sharding-ui/registry-center.png)
+## Runtime Status
 
-## Configuration Management
++ After added and activated a registry center, all running instances of the current registry center will be obtained.
 
-The configuration of all data sources in the current active registry can be obtained, including data sharding, read-write split, properties, and so on.
++ Users can disable or enable the instance by operate button.
 
-![Configuration Management](https://shardingsphere.apache.org/document/current/img/sharding-ui/config-management.png)
-
-The configuration can be modified by the YAML format.
-
-![Configuration ditor](https://shardingsphere.apache.org/document/current/img/sharding-ui/config-edit.png)
-
-## Orchestration
-
-Registry center can disable the access to slave database and the access of application.
-
-### Circuit Breaker
-
-Users can disable or enable the instance.
-
-![Circuit Breaker](https://shardingsphere.apache.org/document/current/img/sharding-ui/circuit-breaker.png)
-
-### Disable Slave Database
-
-Users can disable or enable the access to slave database.
-
-![Disable Slave Database](https://shardingsphere.apache.org/document/current/img/sharding-ui/disable-slave-database.png)
\ No newline at end of file
++ Users can disable or enable the access to slave database.