Merge pull request #6377 from abpframework/maliming-patch-1

Update Abp-4_0.md

docs/en/Migration-Guides/Abp-4_0.md

@@ -251,6 +251,7 @@ public class MyService : ITransientDependency
 ````
 
 Pre-built modules already handles this. However, if you have used `IdentityOptions` directly in your code, you also need to follow this new pattern.
+Please make sure that the injected `IOptions<IdentityOptions>` service and the service consuming it are in the same scope of dependency injection container.
 
 ## ASP.NET Core MVC / Razor Pages UI
 
@@ -262,4 +263,4 @@ See the [Angular UI Migration Guide](Abp-4_0-Angular.md).
 
 ## Blazor UI
 
-See the [Blazor UI Migration Guide](Abp-4_0-Blazor.md).
+See the [Blazor UI Migration Guide](Abp-4_0-Blazor.md).