[Fix][Connector-V2]Fix Descriptions for CUSTOM_SQL in Connector (#8778)

Author: xiaochen-zhou

docs/en/connector-v2/sink/Clickhouse.md

@@ -61,6 +61,7 @@ They can be downloaded via install-plugin.sh or from the Maven central repositor
 | allow_experimental_lightweight_delete | Boolean | No       | false   | Allow experimental lightweight delete based on `*MergeTree` table engine.                                                                                                                                                                                                                                   |
 | schema_save_mode               | Enum    | no       | CREATE_SCHEMA_WHEN_NOT_EXIST | Schema save mode. Please refer to the `schema_save_mode` section below.                                                                                       |
 | data_save_mode                 | Enum    | no       | APPEND_DATA                  | Data save mode. Please refer to the `data_save_mode` section below.                                                                                         |
+| custom_sql                  | String  | no       | -                            | When data_save_mode selects CUSTOM_PROCESSING, you should fill in the CUSTOM_SQL parameter. This parameter usually fills in a SQL that can be executed. SQL will be executed before synchronization tasks.        |
 | save_mode_create_template      | string  | no       | see below                    | See below.                                                                                                                                                  |
 | common-options                        |         | No       | -       | Sink plugin common parameters, please refer to [Sink Common Options](../sink-common-options.md) for details.                                                                                                                                                                                                |
 

docs/zh/connector-v2/sink/Clickhouse.md

@@ -60,6 +60,7 @@
 | allow_experimental_lightweight_delete | Boolean | No   | false | 允许基于`MergeTree`表引擎实验性轻量级删除.                                                                                                                                                      |
 | schema_save_mode               | Enum    | no       | CREATE_SCHEMA_WHEN_NOT_EXIST | schema保存模式，请参考下面的`schema_save_mode`                                                                                                                    |
 | data_save_mode                 | Enum    | no       | APPEND_DATA                  | 数据保存模式，请参考下面的`data_save_mode`。                                                                                                                         |
+| custom_sql                  | String  | no   | -                            | 当data_save_mode设置为CUSTOM_PROCESSING时，必须同时设置CUSTOM_SQL参数。CUSTOM_SQL的值为可执行的SQL语句，在同步任务开启前SQL将会被执行                     |
 | save_mode_create_template      | string  | no       | see below                    | 见下文。                                                                                                                                                   |
 | common-options                        |         | No   | -     | Sink插件查用参数,详见[Sink常用选项](../sink-common-options.md).                                                                                                                              |
 

seatunnel-connectors-v2/connector-clickhouse/src/main/java/org/apache/seatunnel/connectors/seatunnel/clickhouse/config/ClickhouseSinkOptions.java

@@ -91,7 +91,7 @@ public class ClickhouseSinkOptions {
             Options.key("custom_sql")
                     .stringType()
                     .noDefaultValue()
-                    .withDescription("when schema_save_mode selects CUSTOM_PROCESSING custom SQL");
+                    .withDescription("when data_save_mode selects CUSTOM_PROCESSING custom SQL");
 
     public static final Option<String> SAVE_MODE_CREATE_TEMPLATE =
             Options.key("save_mode_create_template")

seatunnel-connectors-v2/connector-starrocks/src/main/java/org/apache/seatunnel/connectors/seatunnel/starrocks/config/StarRocksSinkOptions.java

@@ -154,5 +154,5 @@ public class StarRocksSinkOptions extends StarRocksBaseOptions {
             Options.key("custom_sql")
                     .stringType()
                     .noDefaultValue()
-                    .withDescription("when schema_save_mode selects CUSTOM_PROCESSING custom SQL");
+                    .withDescription("when data_save_mode selects CUSTOM_PROCESSING custom SQL");
 }