Fixed broken reports example

Author: Bart Koelman

src/Examples/ReportsExample/Controllers/ReportsController.cs

@@ -9,7 +9,7 @@
 namespace ReportsExample.Controllers
 {
     [Route("api/[controller]")]
-    public class ReportsController : BaseJsonApiController<Report, int> 
+    public class ReportsController : BaseJsonApiController<Report> 
     {
         public ReportsController(
             IJsonApiOptions jsonApiOptions,

src/Examples/ReportsExample/Startup.cs

@@ -17,7 +17,9 @@ public void ConfigureServices(IServiceCollection services)
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app)
         {
+            app.UseRouting();
             app.UseJsonApi();
+            app.UseEndpoints(endpoints => endpoints.MapControllers());
         }
     }
 }