Incorrect service URL for updates

[moorena]

This is not the correct URL:

Salesforce_Commerce_Cloud_Affirm/cartridges/int_affirm/cartridge/scripts/api/affirmAPI.js

Line 111 in afee520

affirmService.URL = affirmData.getURLPath() + '/v1/transactions/' + chargeId + '/update';

API documentation https://docs.affirm.com/developers/reference/update_transaction notes the correct URL is:

https://sandbox.affirm.com/api/v1/transactions/{transaction_id}

There is no /update in the correct URL.

Calling with /update gets a 404 response:

 service=affirm.update status=ERROR errorCode=404 errorMessage={
  "message": "The checkout associated with the transaction could not be found.",
  "status_code": 404,
  "type": "not_found"
}

Once the /update is removed, a 200/OK response with the transaction info in the response body as expected.