Update 02-query-config.md (#3027)

log history table log_only only support bool: https://github.com/databendlabs/databend/blob/main/src/query/config/src/config.rs#L2782

Author: wubx

docs/en/guides/10-deploy/04-references/02-node-config/02-query-config.md

@@ -109,7 +109,7 @@ The following is a list of the parameters available within the [log.history] sec
 | Parameter          | Description                                                                                                                                                                                                                                                                                         |
 | ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | on                 | Enables or disables the history logging feature. Defaults to false. Set to true to enable history tables.                                                                                                                                                                                           |
-| log_only           | Nodes with enabled will delegate transformation tasks to other nodes, reducing their own workload.                                                                                                                                                                                                  |
+| log_only           | Bool: true/false. Nodes with enabled will delegate transformation tasks to other nodes, reducing their own workload.                                                                                                                                                                                                  |
 | interval           | Specifies the interval (in seconds) at which the history log is flushed. Defaults to 2.                                                                                                                                                                                                             |
 | stage_name         | Specifies the name of the staging area that temporarily holds log data before it is finally copied into the table. Defaults to a unique value to avoid conflicts.                                                                                                                                   |
 | level              | Sets the log level (DEBUG, TRACE, INFO, WARN, or ERROR) for history logging. Defaults to WARN.                                                                                                                                                                                                      |