Patch example in Routing topic (#10135)

aspnetcore/fundamentals/routing.md

@@ -4,7 +4,7 @@ author: rick-anderson
 description: Discover how ASP.NET Core routing is responsible for mapping request URIs to endpoint selectors and dispatching incoming requests to endpoints.
 ms.author: riande
 ms.custom: mvc
-ms.date: 11/15/2018
+ms.date: 12/29/2018
 uid: fundamentals/routing
 ---
 # Routing in ASP.NET Core
@@ -286,6 +286,8 @@ A few differences exist between endpoint routing in ASP.NET Core 2.2 or later an
 In the following example, a middleware uses the `LinkGenerator` API to create link to an action method that lists store products. Using the link generator by injecting it into a class and calling `GenerateLink` is available to any class in an app.
 
 ```csharp
+using Microsoft.AspNetCore.Routing;
+
 public class ProductsLinkMiddleware
 {
     private readonly LinkGenerator _linkGenerator;
@@ -297,8 +299,7 @@ public class ProductsLinkMiddleware
 
     public async Task InvokeAsync(HttpContext httpContext)
     {
-        var url = _linkGenerator.GenerateLink(new { controller = "Store",
-                                                    action = "ListProducts" });
+        var url = _linkGenerator.GetPathByAction("ListProducts", "Store");
 
         httpContext.Response.ContentType = "text/plain";