better format

docs/source/user-guide/configs.md

@@ -89,7 +89,7 @@ Environment variables are read during `SessionConfig` initialisation so they mus
 | datafusion.execution.enable_recursive_ctes                              | true                      | Should DataFusion support recursive CTEs                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
 | datafusion.execution.split_file_groups_by_statistics                    | false                     | Attempt to eliminate sorts by packing & sorting files with non-overlapping statistics into the same file groups. Currently experimental                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
 | datafusion.execution.keep_partition_by_columns                          | false                     | Should DataFusion keep the columns used for partition_by in the output RecordBatches                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
- datafusion.optimizer.enable_distinct_aggregation_soft_limit             | true                      | When set to true, the optimizer will push a limit operation into grouped aggregations which have no aggregate expressions, as a soft limit, emitting groups once the limit is reached, before all rows in the group are read.                                                                                                                                                                                                                                                                                                                                                                           |
+| datafusion.optimizer.enable_distinct_aggregation_soft_limit             | true                      | When set to true, the optimizer will push a limit operation into grouped aggregations which have no aggregate expressions, as a soft limit, emitting groups once the limit is reached, before all rows in the group are read.  
 | datafusion.optimizer.enable_round_robin_repartition                     | true                      | When set to true, the physical plan optimizer will try to add round robin repartitioning to increase parallelism to leverage more CPU cores                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 | datafusion.optimizer.enable_topk_aggregation                            | true                      | When set to true, the optimizer will attempt to perform limit operations during aggregations, if possible                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
 | datafusion.optimizer.filter_null_join_keys                              | false                     | When set to true, the optimizer will insert filters before a join between a nullable and non-nullable column to filter out nulls on the nullable side. This filter can add additional overhead when the file format does not fully support predicate push down.                                                                                                                                                                                                                                                                                                                                         |