Apply suggestions from code review

Co-authored-by: Kenga Derdus <[email protected]>

Author: SHERMANOUKO

articles/active-directory/external-identities/customers/toc.yml

@@ -216,6 +216,7 @@ items:
                 href: tutorial-desktop-wpf-dotnet-sign-in-prepare-tenant.md
               - name: Sign in and sign out
                 href: tutorial-desktop-wpf-dotnet-sign-in-build-app.md
+                displayName: Windows Presentation Form
       - name: Mobile
         items: 
         - name: .NET MAUI

articles/active-directory/external-identities/customers/tutorial-desktop-wpf-dotnet-sign-in-build-app.md

@@ -240,7 +240,7 @@ Modify the *MainWindow.xaml* file to add the UI elements for the app. Open the *
     </StackPanel>
 ```
 
-This code adds key UI elements. The methods and objects handling the functionality of the UI elements are defined in the *MainWindow.xaml.cs* file that we create in the next step.
+This code adds key UI elements. The methods and objects that handles the functionality of the UI elements are defined in the *MainWindow.xaml.cs* file that we create in the next step.
 
 - A button that signs in the user. This button calls the `SignInButton_Click` method when clicked on by the user. 
 - A button that signs out the user. This button calls the `SignOutButton_Click` method when clicked on by the user.
@@ -381,9 +381,9 @@ The *MainWindow.xaml.cs* file contains the code that provides th runtime logic f
 
 ## Add code to the App.xaml.cs file
 
-*App.xaml* is where you declare resources that are used across the app. It's the entry point for your app. *App.xaml.cs8 is the code behind file for *App.xaml*. *App.xaml.cs* also defines the start window for your application. 
+*App.xaml* is where you declare resources that are used across the app. It's the entry point for your app. *App.xaml.cs* is the code behind file for *App.xaml*. *App.xaml.cs* also defines the start window for your application. 
 
-Open the *App.xaml.cs* file in the root folder of the app and add the following code in the file.
+Open the *App.xaml.cs* file in the root folder of the app, then add the following code into it.
 
 ```csharp
 using System.Windows;

articles/active-directory/external-identities/customers/tutorial-desktop-wpf-dotnet-sign-in-prepare-tenant.md

@@ -54,7 +54,7 @@ Since this app signs-in users, add delegated permissions:
 
 [!INCLUDE [active-directory-b2c-app-integration-add-user-flow](./includes/configure-user-flow/add-app-user-flow.md)]
 
-## Pick your registration details
+## Record your registration details
 
 The next step after this tutorial is to build a WPF desktop app that authenticates users. Ensure you have the following details: