Add an example of a delta payload used in a PATCH request to the Delta Payload section

Section 14, Delta Payload in the OData 4.01 JSON format document was updated to indicate that a Delta Payload can be used as both a response to a GET request to a delta link and as the body of a PATCH request. All of the examples in that section are for responses to a delta link. An example of the Delta Payload being used in a PATCH request would be useful in this section.