Fixed class references in Events guide

docs/guide/concept-events.md

@@ -202,7 +202,7 @@ Sometimes, you may want to respond to an event triggered by *every* instance of
 a specific instance. Instead of attaching an event handler to every instance, you may attach the handler
 on the *class level* by calling the static method [[yii\base\Event::on()]].
 
-For example, an [Active Record](db-active-record.md) object will trigger an [[yii\base\ActiveRecord::EVENT_AFTER_INSERT]]
+For example, an [Active Record](db-active-record.md) object will trigger an [[yii\db\BaseActiveRecord::EVENT_AFTER_INSERT|EVENT_AFTER_INSERT]]
 event whenever it inserts a new record into the database. In order to track insertions done by *every*
 [Active Record](db-active-record.md) object, you may use the following code:
 
@@ -216,8 +216,8 @@ Event::on(ActiveRecord::className(), ActiveRecord::EVENT_AFTER_INSERT, function
 });
 ```
 
-The event handler will be invoked whenever an instance of [[yii\base\ActiveRecord|ActiveRecord]], or one of its child classes, triggers
-the [[yii\base\ActiveRecord::EVENT_AFTER_INSERT|EVENT_AFTER_INSERT]] event. In the handler, you can get the object
+The event handler will be invoked whenever an instance of [[yii\db\ActiveRecord|ActiveRecord]], or one of its child classes, triggers
+the [[yii\db\BaseActiveRecord::EVENT_AFTER_INSERT|EVENT_AFTER_INSERT]] event. In the handler, you can get the object
 that triggered the event through `$event->sender`.
 
 When an object triggers an event, it will first call instance-level handlers, followed by the class-level handlers.