Add document for REFRESH DATABASE METADATA. (#22655)

Author: RaigorJiang

docs/document/content/user-manual/shardingsphere-proxy/distsql/syntax/ral/_index.cn.md

@@ -71,6 +71,7 @@ RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管
 | REFRESH TABLE METADATA tableName                                           | 刷新指定表的元数据                                                                                                  | REFRESH TABLE METADATA t_order                                       |
 | REFRESH TABLE METADATA tableName FROM STORAGE UNIT storageUnitName         | 刷新指定数据源中表的元数据                                                                                           | REFRESH TABLE METADATA t_order FROM STORAGE UNIT ds_1                |
 | REFRESH TABLE METADATA FROM STORAGE UNIT storageUnitName SCHEMA schemaName | 刷新指定 schema 中表的元数据，如果 schema 中不存在表，则会删除该 schema                                                 | REFRESH TABLE METADATA FROM STORAGE UNIT ds_1 SCHEMA db_schema       |
+| REFRESH DATABASE METADATA [databaseName] FROM GOVERNANCE CENTER            | 从治理中心拉取最新配置，刷新本地逻辑库元数据                                                                            | REFRESH DATABASE METADATA [databaseName] FROM GOVERNANCE CENTER      |
 | SHOW TABLE METADATA tableName [, tableName] ...                            | 查询表的元数据                                                                                                      | SHOW TABLE METADATA t_order                                           |
 | EXPORT DATABASE CONFIGURATION [FROM databaseName] [TO FILE "filePath"]     | 将 database 中的数据源和规则配置导出为 YAML 格式                                                                      | EXPORT DATABASE CONFIGURATION TO FILE "/xxx/config-sharding.yaml"     |
 | IMPORT DATABASE CONFIGURATION FROM FILE "filePath"                         | 将 YAML 中的配置导入到 database 中，仅支持对空库进行导入操作                                                            | IMPORT DATABASE CONFIGURATION FROM FILE "/xxx/config-sharding.yaml"   |

docs/document/content/user-manual/shardingsphere-proxy/distsql/syntax/ral/_index.en.md

@@ -71,6 +71,7 @@ RAL (Resource & Rule Administration Language) responsible for hint, circuit brea
 | REFRESH TABLE METADATA tableName                                            | Refresh the metadata of the specified table                                                                                                             | REFRESH TABLE METADATA t_order                                    |
 | REFRESH TABLE METADATA tableName FROM STORAGE UNIT storageUnitName          | Refresh the tables' metadata in the specified data source                                                                                               | REFRESH TABLE METADATA t_order FROM STORAGE UNIT ds_1             |
 | REFRESH TABLE METADATA FROM STORAGE UNIT storageUnitName SCHEMA schemaName  | Refresh the tables' metadata in a schema of a specified data source. If there are no tables in the schema, the schema will be deleted.                  | REFRESH TABLE METADATA FROM STORAGE UNIT ds_1 SCHEMA db_schema    |
+| REFRESH DATABASE METADATA [databaseName] FROM GOVERNANCE CENTER             | Pull the latest configuration from the governance center and refresh the metadata of the local logic database                                           | REFRESH DATABASE METADATA [databaseName] FROM GOVERNANCE CENTER   |
 | SHOW TABLE METADATA tableName [, tableName] ...                             | Query table metadata                                                                                                                                    | SHOW TABLE METADATA t_order                                       |
 | EXPORT DATABASE CONFIGURATION [FROM databaseName] [TO FILE "filePath"]      | Export data sources and rule configurations to YAML format                                                                                              | EXPORT DATABASE CONFIGURATION FROM readwrite_splitting_db         |
 | IMPORT DATABASE CONFIGURATION FILE="file_path"                              | Import data sources and rule configurations from YAML, only supports import into an empty database                                                      | IMPORT DATABASE CONFIGURATION FILE = "/xxx/config-sharding.yaml"  |