Removed deprecated docs in the repo (#10706)

* Init

* Update README

---------

Co-authored-by: Beth Pan <beth_panx@hotmail.com>

Author: 0x5bfa

README.md

@@ -1,7 +1,7 @@
 ![WinUI hero image](docs/images/header.png)
 
 <h1 align="center">
-    WinUI 3
+    WinUI
 </h1>
 <p align="center">
   <a href="https://twitter.com/intent/follow?screen_name=windowsui">
@@ -26,8 +26,7 @@ WinUI is a user interface layer that contains modern controls and styles for bui
 - **Powers key experiences in Windows:** Windows experiences and apps are built with WinUI. Its rich control set and styles make it easy to develop high-quality experiences used by millions every day.
 
 <p align="center">
-<img src="docs/images/winui_os.png" alt="Powers key experiences in Windows" width="480"/>
-</br>
+  <img src="docs/images/winui_os.png" alt="Powers key experiences in Windows" width="480"/>
 </p>
 
 ## 📋 Getting started with WinUI
@@ -37,6 +36,8 @@ For WinUI, your app's users must be on Windows 10 1809 - Build 17763 or newer (i
 The full documentation of WinUI can be found on [Microsoft Learn](https://learn.microsoft.com/windows/apps/):
 - [Get started with WinUI](https://learn.microsoft.com/windows/apps/get-started/start-here)
 - [Build your first WinUI app](https://learn.microsoft.com/windows/apps/tutorials/winui-notes/)
+- [Migrate from UWP to the Windows App SDK](https://learn.microsoft.com/windows/apps/windows-app-sdk/migrate-to-windows-app-sdk/migrate-to-windows-app-sdk-ovw)
+- [Windows Runtime APIs not supported in desktop apps](https://learn.microsoft.com/windows/apps/desktop/modernize/desktop-to-uwp-supported-api)
 - [WinUI & Windows App SDK samples](https://learn.microsoft.com/windows/apps/get-started/samples)
 
 </br>
@@ -48,47 +49,40 @@ Make sure to also check out the [WinUI 3 Gallery](https://aka.ms/winui-gallery),
 <img src="docs/images/winui-gallery.png" alt="WinUI 3 Gallery" width="400"/>
 </p>
 <p align="center">
-<a href="https://apps.microsoft.com/detail/WinUI%203%20Gallery/9P3JFPWWDZRC?launch=true
-	&mode=mini">
-	<img src="/docs/images/storeBadge.png" width="200"/>
-</a>
+  <a style="text-decoration:none" href="https://apps.microsoft.com/detail/9P3JFPWWDZRC?launch=true&mode=full">
+    <picture>
+      <source media="(prefers-color-scheme: light)" srcset="docs/images/StoreBadge-dark.png" width="220" />
+      <img src="docs/images/StoreBadge-light.png" width="220" />
+  </picture></a>
 </p>
-</br>
 
 ## 📺 WinUI Community Call
 The WinUI Community Call is your opportunity to learn about WinUI and to engage with the WinUI team and community. Join us online on YouTube at the [Windows Developer channel](https://www.youtube.com/playlist?list=PLI_J2v67C23ZqsolUDaHoFkF1GKvGrttB).
 
-</br>
-
 ## 📢 Contributing to WinUI
 
 The WinUI team welcomes your feedback! To understand how we handle incoming feature requests and bugs, please see our [contribution handling](docs/contribution_handling.md) guidelines.
 
 For information on how to contribute, please see [Contributing to WinUI](CONTRIBUTING.md).
 
-We're not yet ready to accept code contributions, but we are working towards that goal. It is now
-possible to build the WinUI product binaries, with work in progress to share test code and enabling
-locally running tests. To get started building WinUI from source and see more details on current
-limitations, see [Getting started with building WinUI](src/GettingStarted.md). See the
-[WinUI OSS Update post](https://github.com/microsoft/microsoft-ui-xaml/discussions/10700) to check the
-latest status.
-
-For the latest code and updates, use the [`winui3/main`](https://github.com/microsoft/microsoft-ui-xaml/tree/winui3/main)
-branch.
-
-</br>
+> [!WARNING]
+> We're not yet ready to accept code contributions, but we are working towards that goal. It is now
+> possible to build the WinUI product binaries, with work in progress to share test code and enabling
+> locally running tests. To get started building WinUI from source and see more details on current
+> limitations, see [Getting started with building WinUI](src/GettingStarted.md). See the
+> [WinUI OSS Update post](https://github.com/microsoft/microsoft-ui-xaml/discussions/10700) to check the
+> latest status.
+>
+> For the latest code and updates, use the [`winui3/main`](https://github.com/microsoft/microsoft-ui-xaml/tree/winui3/main) branch.
 
 ## 🛣️ Roadmap
 
 For info on the WinUI release schedule and high level plans please see the [WinUI roadmap](https://aka.ms/winappsdk/plans).
 
-</br>
-
-## 🔧 WinUI 2 (for UWP)
-WinUI 2 is a library of controls that provides Microsoft UI controls and features for [UWP apps](https://docs.microsoft.com/windows/uwp/index). Learn more about WinUI 2 [here](https://aka.ms/winui2) or download the source code [here](https://github.com/microsoft/microsoft-ui-xaml/tree/winui2/main).
+## 🔧 WinUI for UWP
+WinUI for UWP (WinUI 2) is a library of controls that provides Microsoft UI controls and features for [UWP apps](https://docs.microsoft.com/windows/uwp/index). Learn more about WinUI for UWP [here](https://aka.ms/winui2) or download the source code [here](https://github.com/microsoft/microsoft-ui-xaml/tree/winui2/main).
 
 You can get the WinUI 2 Gallery [on the Microsoft Store](https://www.microsoft.com/store/productId/9MSVH128X2ZT?ocid=pdpshare) and see the source code [here](https://github.com/microsoft/WinUI-Gallery/tree/winui2).
-</br>
 
 ### Data/Telemetry