docs: refactor upgrade doc mentions

doc/material-migration.md

@@ -2,21 +2,20 @@
 uid: Uno.Themes.Material.Migration
 ---
 
-# Upgrading Uno.Material
+# Upgrading Uno Material
 
-## Upgrading to Uno Themes v5.0
+## Upgrading to Uno Themes v5
 
-Version 5.0.0 of Uno Themes introduces breaking changes to the library. Below are the changes that have been made:
+The Uno Material v5 packages introduce a new dependency on the [Uno Themes](https://www.nuget.org/packages/Uno.Themes.WinUI) package. Uno Themes is the base library for all design system implementations going forward. As a result, the following change have been made:
 
 ### Converters
 
-All Converters were moved to the `Uno.Themes` library, and the new `namespace` is `Uno.Themes`.
+All Converters were moved to the base `Uno.Themes` library, and the new `namespace` is `Uno.Themes`.
 
 Before:
 
 ```xml
 <Page xmlns:um="using:Uno.Material">
-
     <Page.Resources>
         <um:FromNullToValueConverter x:Key="NotNullVisibilityConverter">
     </Page.Resources>
@@ -27,7 +26,6 @@ After:
 
 ```xml
 <Page xmlns:ut="using:Uno.Themes">
-
     <Page.Resources>
         <ut:FromNullToValueConverter x:Key="NotNullVisibilityConverter">
     </Page.Resources>

doc/themes-control-extensions.md

@@ -4,13 +4,6 @@ uid: Uno.Themes.Control.Extensions
 
 # Control Extensions
 
-Starting on version 5.0.0 the `ControlExtensions` are available on the `Uno.Themes` namespace, so to use that in xaml you should add the following xmlns to your project:
-
-`xmlns:ut="using:Uno.Themes"`
-
-> [!INFO]
-> For more information about see our [migration docs](material-migration.md).
-
 ## Icon
 
 This feature allows for the addition of icon on the supported controls. Those icons could be any of the [`IconElement`](https://learn.microsoft.com/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.controls.iconelement)s: `<BitmapIcon />`, `<FontIcon />`, `<PathIcon />`, or `<SymbolIcon />`.
@@ -114,4 +107,3 @@ The following control styles have support for elevation:
 | Control  | Supporting Styles     |
 |----------|-----------------------|
 | `Button` | `ElevatedButtonStyle` |
-|----------|-----------------------|