chore(common): link article in overview

Author: ntacheva

upgrade/rendering-changes/list.md

@@ -10,6 +10,7 @@ position: 0
 
 As the Telerik UI for Blazor matures we will continuously optimize the HTML rendering and the usage of CSS classes. The rendering changes only affect the styling of the components if the application [overrides the built-in CSS styles]({%slug themes-override%}) or uses an outdated [custom theme]({%slug themes-customize%}). This article tracks the product versions with rendering changes.
 
+* [7.0.0]({%slug changes-in-7-0-0%})
 * [6.0.0]({%slug changes-in-6-0-0%})
 * [4.6.0]({%slug changes-in-4-6-0%})
 * [4.3.0]({%slug changes-in-4-3-0%})