More markdowntextblock improvements

components/MarkdownTextBlock/samples/MarkdownTextBlockCustomThemeSample.xaml.cs

@@ -9,6 +9,7 @@ namespace MarkdownTextBlockExperiment.Samples;
 /// <summary>
 /// A sample demonstrating custom theming options for the MarkdownTextBlock control with live editing.
 /// </summary>
+/// 
 [ToolkitSample(id: nameof(MarkdownTextBlockCustomThemeSample), "Custom Theme", description: "A sample showcasing custom theming options with live editing for headings, code blocks, quotes, tables, and more.")]
 public sealed partial class MarkdownTextBlockCustomThemeSample : MarkdownTextBlockCustomThemeSampleBase
 {
@@ -34,12 +35,16 @@ This sample demonstrates the **custom theming** capabilities of the `MarkdownTex
 
 ## Images
 
-Images can be styled with max width, max height, and stretch options. Notice how the text flows naturally without any gaps above or below the image:
+Images can be styled with max width, max height, corner radius, and stretch options. Notice how the text flows naturally without any gaps above or below the image:
 
 ![Windows Terminal](https://devblogs.microsoft.com/commandline/wp-content/uploads/sites/33/2025/11/0.96-Social-media-image-V2-1024x536.webp)
 
 The image above automatically scales to respect the max width setting while maintaining its aspect ratio. Text continues to flow seamlessly below it.
 
+![Shortcut Conflict](https://devblogs.microsoft.com/commandline/wp-content/uploads/sites/33/2025/09/ShortcutConflict.png)
+
+Here's another image showing how corner radius can be applied to give images rounded corners.
+
 ## Code Blocks
 
 ```csharp