Update sample links

docs/en/Samples/Index.md

@@ -15,15 +15,11 @@ A complete solution to demonstrate how to build systems based on the microservic
 A simple CRUD application to show basic principles of developing an application with the ABP Framework. The same sample was implemented with different technologies:
 
 * **Book Store: Razor Pages UI & Entity Framework Core**
-
+  * [Tutorial](https://docs.abp.io/en/abp/latest/Tutorials/Part-1?UI=MVC&DB=EF)
-  * [Tutorial](https://docs.abp.io/en/abp/latest/Tutorials/Part-1?UI=MVC)
+  * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Mvc-EfCore)
-  * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore)
-
 * **Book Store: Angular UI & MongoDB**
-
+  * [Tutorial](https://docs.abp.io/en/abp/latest/Tutorials/Part-1?UI=NG&DB=Mongo)
-  * [Tutorial](https://docs.abp.io/en/abp/latest/Tutorials/Part-1?UI=NG)
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Angular-MongoDb)
-
 * **Book Store: Modular application (Razor Pages UI & EF Core)**
 
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Modular)
@@ -33,11 +29,14 @@ While there is no Razor Pages & MongoDB combination, you can check both document
 ### Other Samples
 
 * **Entity Framework Migrations**: A solution to demonstrate how to split your application into multiple databases each database contains different modules.
-  * [Source code](https://github.com/abpframework/abp-samples/tree/master/DashboardDemo)
+  * [Source code](https://github.com/abpframework/abp-samples/tree/master/EfCoreMigrationDemo)
   * [EF Core database migrations document](../Entity-Framework-Core-Migrations.md)
 * **SignalR Demo**: A simple chat application that allows to send and receive messages among authenticated users.
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/SignalRDemo)
   * [SignalR Integration document](../SignalR-Integration.md)
+* **Real Time Messaging In A Distributed Architecture** (using SingalR & RabbitMQ)
+  * [Source code](https://github.com/abpframework/abp-samples/tree/master/SignalRTieredDemo)
+  * [Article](https://community.abp.io/articles/real-time-messaging-in-a-distributed-architecture-using-abp-framework-singalr-rabbitmq-daf47e17)
 * **Dashboard Demo**: A simple application to show how to use the widget system for the ASP.NET Core MVC UI.
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/DashboardDemo)
   * [Widget documentation](../UI/AspNetCore/Widgets.md)
@@ -50,15 +49,17 @@ While there is no Razor Pages & MongoDB combination, you can check both document
   * [Text templating documentation](../Text-Templating.md)
 * **Stored Procedure Demo**: Demonstrates how to use stored procedures, database views and functions with best practices.
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/StoredProcedureDemo)
+* **Passwordless Authentication**: Shows how to add a custom token provider to authenticate a user with a link, instead of entering a password.
+  * [Source code](https://github.com/abpframework/abp-samples/tree/master/PasswordlessAuthentication)
+  * [Article](https://community.abp.io/articles/implementing-passwordless-authentication-with-asp.net-core-identity-c25l8koj)
 * **Authentication Customization**: A solution to show how to customize the authentication for ASP.NET Core MVC / Razor Pages applications.
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/aspnet-core/Authentication-Customization)
-  * Related "[How To](../How-To/Index.md)" documents:
+  * Related articles:
-    * [Azure Active Directory Authentication](../How-To/Azure-Active-Directory-Authentication-MVC.md)
+    * [Azure Active Directory Authentication](https://community.abp.io/articles/how-to-use-the-azure-active-directory-authentication-for-mvc-razor-page-applications-4603b9cf)
-    * [Customize the Login Page](../How-To/Customize-Login-Page-MVC.md)
+    * [Customize the Login Page](https://community.abp.io/articles/how-to-customize-the-login-page-for-mvc-razor-page-applications-9a40f3cd)
-    * [Customize the SignIn Manager](../How-To/Customize-SignIn-Manager.md)
+    * [Customize the SignIn Manager](https://community.abp.io/articles/how-to-customize-the-signin-manager-3e858753)
+* **GRPC Demo**: Shows how to add a gRPC service to an ABP Framework based web application and consume it from a console application.
+  * [Source code](https://github.com/abpframework/abp-samples/tree/master/GrpcDemo)
 * **Empty ASP.NET Core Application**: The most basic ASP.NET Core application with the ABP Framework installed.
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BasicAspNetCoreApplication)
-  * [Documentation](../Getting-Started-AspNetCore-Application.md)
+  * [Documentation](../Getting-Started-AspNetCore-Application.md)
-* **Empty Console Application**: The most basic console application with the ABP Framework installed.
-  * [Source code](https://github.com/abpframework/abp-samples/tree/master/BasicConsoleApplication)
-  * [Documentation](../Getting-Started-Console-Application.md)