Update How-To-Add-Custom-Property-To-The-User-Entity.md

docs/en/Community-Articles/2020-10-08-How-To-Add-Custom-Property-To-The-User-Entity/How-To-Add-Custom-Property-To-The-User-Entity.md

@@ -78,7 +78,7 @@ public static class CustomizeUserDemoEfCoreEntityExtensionMappings
                     nameof(AppUser.Title),
                     (entityBuilder, propertyBuilder) =>
                     {
-                        propertyBuilder.IsRequired();
+                        propertyBuilder.HasDefaultValue();
                         propertyBuilder.HasMaxLength(UserConsts.MaxTitleLength);
                     }
                 ).MapEfCoreProperty<IdentityUser, int>(