Merge pull request #33809 from fidalgo/improve-remove-column-documentation

[ci skip] Improve remove_column documentation

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -602,6 +602,7 @@ def remove_columns(table_name, *column_names)
       # The +type+ and +options+ parameters will be ignored if present. It can be helpful
       # to provide these in a migration's +change+ method so it can be reverted.
       # In that case, +type+ and +options+ will be used by #add_column.
+      # Indexes on the column are automatically removed.
       def remove_column(table_name, column_name, type = nil, options = {})
         execute "ALTER TABLE #{quote_table_name(table_name)} #{remove_column_for_alter(table_name, column_name, type, options)}"
       end