readme guide improved

extensions/yii/faker/README.md

@@ -46,7 +46,7 @@ return [
 		'table_column0' => 'faker_formatter',
 		...
 		'table_columnN' => 'other_faker_formatter'
-		'table_columnN+1' => function ($fixture, $faker, $index) {
+		'body' => function ($fixture, $faker, $index) {
 			//set needed fixture fields based on different conditions
 
 			$fixture['body'] = $faker->sentence(7,true); #generate sentence exact with 7 words.