Fixed code style and indentations

framework/data/ArrayDataProvider.php

@@ -63,11 +63,12 @@ class ArrayDataProvider extends BaseDataProvider
      * The array elements must use zero-based integer keys.
      */
     public $allModels;
-	/**
-	 * @var string the name of the \yii\base\Model based class used to provide column labels.
-	 * @since 2.0.9
-	 */
-	public $modelClass;
+    /**
+     * @var string the name of the [[yii\base\Model|Model]] class that will be represented.
+     * This property is used to get columns' names.
+     * @since 2.0.9
+     */
+    public $modelClass;
 
     /**
      * @inheritdoc