Minor: rename row_groups.rs to row_group_filter.rs (apache#11481)

Author: alamb

datafusion/core/src/datasource/physical_plan/parquet/mod.rs

@@ -53,7 +53,7 @@ mod opener;
 mod page_filter;
 mod reader;
 mod row_filter;
-mod row_groups;
+mod row_group_filter;
 mod statistics;
 mod writer;
 

datafusion/core/src/datasource/physical_plan/parquet/opener.rs

@@ -18,7 +18,7 @@
 //! [`ParquetOpener`] for opening Parquet files
 
 use crate::datasource::physical_plan::parquet::page_filter::PagePruningPredicate;
-use crate::datasource::physical_plan::parquet::row_groups::RowGroupAccessPlanFilter;
+use crate::datasource::physical_plan::parquet::row_group_filter::RowGroupAccessPlanFilter;
 use crate::datasource::physical_plan::parquet::{
     row_filter, should_enable_page_index, ParquetAccessPlan,
 };