Reacting to hosting rename

src/MusicStore/Program.cs

@@ -6,13 +6,13 @@ namespace MusicStore
     {
         public static void Main(string[] args)
         {
-            var application = new WebApplicationBuilder()
+            var host = new WebHostBuilder()
-                .UseConfiguration(WebApplicationConfiguration.GetDefault(args))
+                .UseDefaultConfiguration(args)
                 .UseIISPlatformHandlerUrl()
                 .UseStartup("MusicStore")
                 .Build();
 
-            application.Run();
+            host.Run();
         }
     }
 }