Changes to Find a domain to buy, with prices

removed the taken enum value from the free/status response property for the response status 200

added the optional property docs_url to the response with the 400 status

added the optional property docs_url to the response with the 404 status

added the optional property docs_url to the response with the 429 status

added the optional property docs_url to the response with the 502 status

added the optional property next to the response with the 400 status

added the optional property next to the response with the 404 status

added the optional property next to the response with the 429 status

added the optional property next to the response with the 502 status

added the optional property retryable to the response with the 400 status

added the optional property retryable to the response with the 404 status

added the optional property retryable to the response with the 429 status

added the optional property retryable to the response with the 502 status

endpoint added