fix theme version

Author: filipKovachev

examples/kendo-react-e-commerce-astro-app/src/components/Header.tsx

@@ -21,7 +21,7 @@ interface CustomMenuItemModel extends MenuItemModel {
 const Header: React.FC = () => {
   const isAdminValue = useStore(isAdmin);
   const [theme, setTheme] = useState(
-    "https://kendo.cdn.telerik.com/themes/5.0.1/default/default-main.css"
+    "https://unpkg.com/@progress/kendo-theme-default@10.0.0/dist/default-main.css"
   );
 
   const handleThemeChange = (event: any) => {