Added route hints to Program configuration for clarity

Sometimes, the exact routes that configuration extensions are setting up isn't immediately obvious. To help build intuition about this, and to extend the documentation, I've added route hints as comments next to each configuration. This is a best practice we try to follow for production sites.

Author: JeremyCaney

OnTopic.AspNetCore.Mvc.Host/Program.cs

@@ -67,12 +67,12 @@
 /*------------------------------------------------------------------------------------------------------------------------------
 | Configure: MVC
 \-----------------------------------------------------------------------------------------------------------------------------*/
-app.MapTopicErrors("Error");
-app.MapDefaultControllerRoute();
-app.MapTopicRoute("Web");
-app.MapTopicRoute("Error");
-app.MapTopicSitemap();
-app.MapTopicRedirect();
+app.MapTopicErrors("Error");                           // Error/{statusCode}
+app.MapDefaultControllerRoute();                                // {controller=Home}/{action=Index}/{id?}
+app.MapTopicRoute("Web");                              // Web/{**path}
+app.MapTopicRoute("Error");                            // Error/{**path}
+app.MapTopicSitemap();                                          // Sitemap
+app.MapTopicRedirect();                                         // Topic/{topicId}
 app.MapControllers();
 
 /*------------------------------------------------------------------------------------------------------------------------------