Sync /// with readme.md

Framework/CustomStyling/Module1.cs

@@ -31,7 +31,7 @@ namespace CustomStyling
     /// Show how to apply custom styles to a UserControl that work in both Light and Dark modes.
     /// </summary>
     /// <remarks>
-    /// New at 1.4, ArcGIS Pro supports a Light theme, Dark theme, and a variant of the Dark theme for use with High Contrast. Developers who want their Add-ins to blend in with Pro must likewise style their Add-in UIs to provide a Light and Dark themeing. In most cases, developers need only apply 'ESRI' styles to their UserControl content (refer to the ProGuide at [ProGuide: Styling UI Components](https://github.com/ArcGIS/arcgis-pro-sdk/wiki/ProGuide-Styling-UI-Components). However, there may be situations where you need to derive your own styles and have them switch between a custom Light and Dark mode to mirror the current theme being applied to Pro. This sample shows you how.  
+    /// New at 1.4, ArcGIS Pro supports a Light theme, Dark theme, and a variant of the Dark theme for use with High Contrast. Developers who want their Add-ins to blend in with Pro must likewise style their Add-in UIs to provide a Light and Dark themeing. In most cases, developers need only apply 'ESRI' styles to their UserControl content (refer to the ProGuide at [ProGuide Styling Guide](https://github.com/Esri/arcgis-pro-sdk/wiki/proguide-style-guide)). However, there may be situations where you need to derive your own styles and have them switch between a custom Light and Dark mode to mirror the current theme being applied to Pro. This sample shows you how.     
     /// The sample contains a custom UserControl as well as a custom Light and Dark theme that is applied at runtime in conjunction with the Light or Dark theme applied to Pro.  
     /// Steps:  
     /// 1. In Visual Studio click the Build menu. Then select Build Solution.