update sitepoint link (#19441)

Author: Arhell

docs/guide/output-data-widgets.md

@@ -777,4 +777,4 @@ Which generates a [[yii\widgets\Pjax|Pjax]] widget wrapping the
 Further reading
 ---------------
 
-- [Rendering Data in Yii 2 with GridView and ListView](http://www.sitepoint.com/rendering-data-in-yii-2-with-gridview-and-listview/) by Arno Slatius.
+- [Rendering Data in Yii 2 with GridView and ListView](https://www.sitepoint.com/rendering-data-in-yii-2-with-gridview-and-listview/) by Arno Slatius.