Fix doc block annotation for TextHelper.

src/View/Helper/NumberHelper.php

@@ -40,11 +40,11 @@ class NumberHelper extends Helper
     ];
 
     /**
-     * Cake\I18n\LocalizedNumber instance
+     * Cake\I18n\Number instance
      *
      * @var \Cake\I18n\Number
      */
-    protected $_engine = null;
+    protected $_engine;
 
     /**
      * Default Constructor

src/View/Helper/TextHelper.php

@@ -56,9 +56,9 @@ class TextHelper extends Helper
     protected $_placeholders = [];
 
     /**
-     * String utility instance
+     * Cake Utility Text instance
      *
-     * @var \stdClass
+     * @var \Cake\Utility\Text
      */
     protected $_engine;