generate config (#421)

docs/source/user-guide/configs.md

@@ -36,7 +36,6 @@ Comet provides the following configuration settings.
 | spark.comet.exceptionOnDatetimeRebase | Whether to throw exception when seeing dates/timestamps from the legacy hybrid (Julian + Gregorian) calendar. Since Spark 3, dates/timestamps were written according to the Proleptic Gregorian calendar. When this is true, Comet will throw exceptions when seeing these dates/timestamps that were written by Spark version before 3.0. If this is false, these dates/timestamps will be read as if they were written to the Proleptic Gregorian calendar and will not be rebased. | false |
 | spark.comet.exec.all.enabled | Whether to enable all Comet operators. By default, this config is false. Note that this config precedes all separate config 'spark.comet.exec.<operator_name>.enabled'. That being said, if this config is enabled, separate configs are ignored. | false |
 | spark.comet.exec.all.expr.enabled | Whether to enable all Comet exprs. By default, this config is false. Note that this config precedes all separate config 'spark.comet.exec.<expr_name>.enabled'. That being said, if this config is enabled, separate configs are ignored. | false |
-| spark.comet.exec.broadcast.enabled | Whether to force enabling broadcasting for Comet native operators. By default, this config is false. Comet broadcast feature will be enabled automatically by Comet extension. But for unit tests, we need this feature to force enabling it for invalid cases. So this config is only used for unit test. | false |
 | spark.comet.exec.enabled | Whether to enable Comet native vectorized execution for Spark. This controls whether Spark should convert operators into their Comet counterparts and execute them in native space. Note: each operator is associated with a separate config in the format of 'spark.comet.exec.<operator_name>.enabled' at the moment, and both the config and this need to be turned on, in order for the operator to be executed in native. By default, this config is false. | false |
 | spark.comet.exec.memoryFraction | The fraction of memory from Comet memory overhead that the native memory manager can use for execution. The purpose of this config is to set aside memory for untracked data structures, as well as imprecise size estimation during memory acquisition. Default value is 0.7. | 0.7 |
 | spark.comet.exec.shuffle.codec | The codec of Comet native shuffle used to compress shuffle data. Only zstd is supported. | zstd |