docs(Common): Add Rendering Changes for 9.0.0

Author: dimodi

upgrade/rendering-changes/10-0-0.md

@@ -3,7 +3,7 @@ title: 10.0.0
 description: Handle the rendering changes in the 10.0.0 release of the Telerik UI for Blazor components.
 page_title: Rendering Changes in the 10.0.0 Release
 slug: rendering-changes-in-10-0-0
-position: 965
+position: 960
 ---
 
 # Rendering Changes in 10.0.0

upgrade/rendering-changes/9-0-0.md

@@ -0,0 +1,18 @@
+---
+title: 9.0.0
+description: Handle the rendering changes in the 9.0.0 release of the Telerik UI for Blazor components.
+page_title: Rendering Changes in the 9.0.0 Release
+slug: rendering-changes-in-9-0-0
+position: 965
+---
+
+# Rendering Changes in 10.0.0
+
+## Grid, TreeList
+
+The `k-alt` CSS class on alternating (even) table rows is removed. Use `k-table-alt-row` instead.
+
+## See Also
+
+* [Use best practices when overriding theme styles](slug:themes-override#best-practices)
+* [Breaking changes in Telerik UI for Blazor 9.0.0](slug:changes-in-9-0-0)

upgrade/rendering-changes/list.md

@@ -11,6 +11,7 @@ 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the styling of the components if the application [overrides the built-in CSS styles](slug:themes-override) or uses an outdated [custom theme](slug:themes-customize).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.
 
 * [10.0.0](slug:rendering-changes-in-10-0-0)
+* [9.0.0](slug:rendering-changes-in-9-0-0)
 * [7.0.0](slug:rendering-changes-in-7-0-0)
 * [6.0.0](slug:rendering-changes-in-6-0-0)
 * [4.6.0](slug:rendering-changes-in-4-6-0)