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/cloudstack/cs_resourcelimit.py

@@ -53,24 +53,17 @@ options:
     description:
       - Maximum number of the resource.
       - Default is unlimited C(-1).
-    required: false
     default: -1
     aliases: [ 'max' ]
   domain:
     description:
       - Domain the resource is related to.
-    required: false
-    default: null
   account:
     description:
       - Account the resource is related to.
-    required: false
-    default: null
   project:
     description:
       - Name of the project the resource is related to.
-    required: false
-    default: null
 extends_documentation_fragment: cloudstack
 '''