Migration: IHostApplicationLifetime+Environments (dotnet#14190)

aspnetcore/migration/22-to-30.md

@@ -4,7 +4,7 @@ author: rick-anderson
 description: Learn how to migrate an ASP.NET Core 2.2 project to ASP.NET Core 3.0.
 ms.author: riande
 ms.custom: mvc
-ms.date: 09/03/2019
+ms.date: 09/06/2019
 uid: migration/22-to-30
 ---
 # Migrate from ASP.NET Core 2.2 to 3.0
@@ -173,7 +173,9 @@ General advice:
 * If the app uses authentication/authorization features such as `AuthorizePage` or `[Authorize]`, place the call to `UseAuthentication` and `UseAuthorization` **after** `UseRouting` (and **after** `UseCors` if CORS Middleware is used).
 * Replace `UseMvc` or `UseSignalR` with `UseEndpoints`.
 * If the app uses [CORS](xref:security/cors) scenarios, such as `[EnableCors]`, place the call to `UseCors` before any other middlewares that use CORS (for example, place `UseCors` before `UseAuthentication`, `UseAuthorization`, and `UseMvc`).
-* Replace `IHostingEnvironment` with `IWebHostEnvironment` and add a `using` statement for the `Microsoft.Extensions.Hosting` namespace.
+* Replace `IHostingEnvironment` with `IWebHostEnvironment` and add a `using` statement for the <xref:Microsoft.Extensions.Hosting?displayProperty=fullName> namespace.
+* Replace `IApplicationLifetime` with <xref:Microsoft.Extensions.Hosting.IHostApplicationLifetime> (<xref:Microsoft.Extensions.Hosting?displayProperty=fullName> namespace).
+* Replace `EnvironmentName` with <xref:Microsoft.Extensions.Hosting.Environments> (<xref:Microsoft.Extensions.Hosting?displayProperty=fullName> namespace).
 
 The following is an example of `Startup.Configure` in a typical ASP.NET Core 2.2 app: