Doc: Updated example icons and images

Author: Lachee

Docfx/articles/features/assets.md

@@ -3,12 +3,15 @@ uid: assets
 ---
 
 # Assets
-![List of assets](https://i.lu.je/2025/firefox_IoIC79H7Zh.png)
+![List of assets](https://i.lu.je/2025/firefox_nta5I3VkPp.png)
 
 Your Rich Presence can have a small and a large image displayed instead of its default icon called Assets.
 
 These assets are ideal for representing maps, characters, loadouts, or other situational information about your game.
 
+> [!TIP]
+> The demo application used throughout the library has a set of testing static assets you can try out. They can be found in the [Resources](https://github.com/Lachee/discord-rpc-csharp/tree/master/Resources/Discord App Images/) folder
+
 ## Static Assets
 You can upload new assets and given them a `key` in the [Discord Application](https://discord.com/developers/applications) → App → Rich Presence → Art Assets.
 This is the prefered way as they are easily referenced by a key and doesn't require an external web server.

Resources/Discord App Images/README.md

@@ -0,0 +1,4 @@
+# Example App
+For debugging and testing purposes, we use the sample app "Rich Presence for .NET" ( app id: `424087019149328395` )
+
+In this folder is all the example assets provided by this app for testing. Their filenames is the image key to use.