[AWS::SageMaker::Domain] - [Docs] - DefaultSpaceSettings are set as not required even though they are

### Name of the resource

AWS::SageMaker::Domain

### Resource name

_No response_

### Reference Link

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-sagemaker-domain.html
https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_sagemaker.CfnDomainProps.html

### Details

The documentation of the Sagemaker Domain says that the DefaultSpaceSettings are not required as a property but this is not true, as there is an Error if you try to deploy a Sagemaker Domain without any DefaultSpaceSettings, which complains that these are missing.
The Terraform documentation for example has documented this correctly: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/sagemaker_domain