React to errorhandler and errorpage extension name changes

samples/TagHelperSample.Web/Startup.cs

@@ -26,7 +26,7 @@ namespace TagHelperSample.Web
                 || (name.StartsWith("Microsoft.Net.Http.Server.WebListener", StringComparison.OrdinalIgnoreCase)
                     && logLevel >= LogLevel.Information));
 
-            app.UseErrorPage();
+            app.UseDeveloperExceptionPage();
 
             app.UseStaticFiles();
 

test/WebSites/ErrorPageMiddlewareWebSite/Startup.cs

@@ -18,7 +18,7 @@ namespace ErrorPageMiddlewareWebSite
         {
             app.UseCultureReplacer();
 
-            app.UseErrorPage();
+            app.UseDeveloperExceptionPage();
             app.UseMvc();
         }
     }