* Improve Swagger Description.

* Remove Error Controller from Swagger Docs.

src/Squidex/Controllers/Api/Statistics/UsagesController.cs

@@ -102,7 +102,7 @@ namespace Squidex.Controllers.Api.Statistics
         }
 
         /// <summary>
-        /// Get current size of all assets for today.
+        /// Get total asset size.
         /// </summary>
         /// <param name="app">The name of the app.</param>
         /// <returns>

src/Squidex/Controllers/UI/Error/ErrorController.cs

@@ -7,9 +7,11 @@
 // ==========================================================================
 
 using Microsoft.AspNetCore.Mvc;
+using NSwag.Annotations;
 
 namespace Squidex.Controllers.UI.Error
 {
+    [SwaggerIgnore]
     public class ErrorController : Controller
     {
         [Route("error")]