Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

lib/ansible/modules/cloud/amazon/s3_website.py

@@ -25,29 +25,21 @@ options:
     description:
       - "Name of the s3 bucket"
     required: true
-    default: null
   error_key:
     description:
       - "The object key name to use when a 4XX class error occurs. To remove an error key, set to None."
-    required: false
-    default: null
   redirect_all_requests:
     description:
       - "Describes the redirect behavior for every request to this s3 bucket website endpoint"
-    required: false
-    default: null
   region:
     description:
      - >
        AWS region to create the bucket in. If not set then the value of the AWS_REGION and EC2_REGION environment variables are checked,
        followed by the aws_region and ec2_region settings in the Boto config file.  If none of those are set the region defaults to the
        S3 Location: US Standard.
-    required: false
-    default: null
   state:
     description:
       - "Add or remove s3 website configuration"
-    required: false
     default: present
     choices: [ 'present', 'absent' ]
   suffix:
@@ -56,7 +48,6 @@ options:
         Suffix that is appended to a request that is for a directory on the website endpoint (e.g. if the suffix is index.html and you make a request to
         samplebucket/images/ the data that is returned will be for the object with the key name images/index.html). The suffix must not include a slash
         character.
-    required: false
     default: index.html
 
 extends_documentation_fragment: