CHANGELOG updated

framework/CHANGELOG.md

@@ -48,7 +48,7 @@ Yii Framework 2 Change Log
 - Enh: Added support to insert an event handler at the beginning of class-level event handler queue (qiangxue)
 - Enh: Added `yii\console\Controller::EXIT_CODE_NORMAL` and `yii\console\Controller::EXIT_CODE_ERROR` constants (samdark)
 - Enh: `yii\console\MigrateController` now returns `yii\console\Controller::EXIT_CODE_ERROR` in case of failed migration (samdark)
-- Enh: Added support for arrays for `exist` validator (creocoder)
+- Enh: Added support for array attributes in `exist` validator (creocoder)
 - Chg #2913: RBAC `DbManager` is now initialized via migration (samdark)
 - Chg #3036: Upgraded Twitter Bootstrap to 3.1.x (qiangxue)
 - Chg #3175: InvalidCallException, InvalidParamException, UnknownMethodException are now extended from SPL BadMethodCallException (samdark)