Some swagger fixes

src/Squidex.Core/Schemas/Field.cs

@@ -197,7 +197,7 @@ namespace Squidex.Core.Schemas
                 languagesObject.Properties.Add(language.Iso2Code, languageProperty);
             }
 
-            languagesProperty.AllOf.Add(schemaResolver($"{schemaName}{Name.ToPascalCase()}Property", languagesObject));
+            languagesProperty.SchemaReference = schemaResolver($"{schemaName}{Name.ToPascalCase()}Property", languagesObject);
 
             schema.Properties.Add(Name, languagesProperty);
         }

src/Squidex.Core/Schemas/Schema.cs

@@ -196,7 +196,7 @@ namespace Squidex.Core.Schemas
 
             var schemaName = Name.ToPascalCase();
 
-            var schema = new JsonSchema4 { Id = schemaName, Type = JsonObjectType.Object };
+            var schema = new JsonSchema4 { Type = JsonObjectType.Object };
 
             foreach (var field in fieldsByName.Values.Where(x => !x.IsHidden))
             {
@@ -300,7 +300,7 @@ namespace Squidex.Core.Schemas
             }
         }
 
-        private static async Task ValidateLocalizableFieldAsync(HashSet<Language> languages, ContentFieldData fieldData, List<string> fieldErrors, Field field)
+        private static async Task ValidateLocalizableFieldAsync(ICollection<Language> languages, ContentFieldData fieldData, List<string> fieldErrors, Field field)
         {
             foreach (var valueLanguage in fieldData.Keys)
             {