use snake-case for rowId

example/google-sheets/westeros-houses/inc/queries/class-get-westeros-houses-query.php

@@ -29,7 +29,7 @@ class GetWesterosHousesQuery extends HttpQueryContext {
 	public array $output_variables = [
 		'is_collection' => false,
 		'mappings'      => [
-			'rowId'     => [
+			'row_id'     => [
 				'name' => 'Row ID',
 				'path' => '$.RowId',
 				'type' => 'id',

example/google-sheets/westeros-houses/inc/queries/class-list-westeros-houses-query.php

@@ -62,7 +62,7 @@ public function process_response( string $raw_response_data, array $input_variab
 			$parsed_response_data['values'] = array_map(
 				function ( $row, $index ) {
 					$combined          = array_combine( self::COLUMNS, $row );
-					$combined['RowId'] = $index + 1; // Add rowId field, starting from 1
+					$combined['RowId'] = $index + 1; // Add row_id field, starting from 1
 					return $combined;
 				},
 				$values,