Update ui-xamarin.md

Author: Mrayyan

articles/communication-services/samples/includes/ui-xamarin.md

@@ -38,7 +38,7 @@ Refer to the native [UI Library overview](/azure/communication-services/concepts
 Clone repo and open `CommunicationCallingXamarinSampleApp.sln` in Visual Studio
 
 #### For Android
-1. Navigate to `/XamarinAndroidBindings/` and in this directory in terminal run `sh downloadJarScript` [Learn More](XamarinAndroidBindings/README.md#download-jarsaars)
+1. Navigate to `/XamarinAndroidBindings/` and in this directory in terminal run `sh downloadJarScript` [Learn More](https://github.com/Azure-Samples/communication-services-ui-library-xamarin/blob/main/XamarinAndroidBindings/README.md)
 2. Set `CommunicationCallingXamarinSampleApp.Android` as start up project, build solution and select a device or emulator to run application.
 
 #### For iOS