rest_api: rename json_response paginator to json_link

[burnash]

Description

Currently, in the rest_api there are two paginators which use URL of the next page to paginate the results: json_response and header_link. json_response uses the next key in the JSON response, while header_link uses the Link header of the response.

Proposal

To be more consistent with the naming, and better reflect the actual functionality, we should rename the json_response paginator to json_link.

Task

• Rename the json_response paginator to json_link in the rest_api module.
• Update the doc in the dlt core repo
• Update tests if needed

Related issues

dlt-hub/dlt#1495