Conformance language revisions in (#23)

* Conformance language revisions in

- URL and usage
- Getting a property
- Getting the class descriptor of an object

* Update API requests.md

With further conformance language clarifications and changes in the following sections:
- Getting the datatype descriptor of a property
- Getting all the properties of a role path
- Changing a property
- Setting bulk properties for a role path

* Correct datatype usage

* Finalise conformance language review of this section.

* Conformance language updates

* Update docs/API requests.md

Co-authored-by: jonathan-r-thorpe <[email protected]>

* Update docs/API requests.md

Co-authored-by: jonathan-r-thorpe <[email protected]>

* Update docs/API requests.md

Co-authored-by: jonathan-r-thorpe <[email protected]>

* Update wording as per review feedback

* Update wording as per review feedback

* Update language referring to errorMessage as per review feedback

* Update wording to clarify that NcMethodResultError can be used directly

or as a derived datatype.

---------

Co-authored-by: jonathan-r-thorpe <[email protected]>