[payment-request-tests] Wrong short name for payment-request (#3299)

The payment request shortname [1] is different than its github ID [2]...
Just need to move this over so we can start populating tests in it as
the specifications are stabilizing.

[1] https://www.w3.org/TR/payment-request/
[2] https://w3c.github.io/browser-payment-api/

View on GitHub: https://github.com/w3c/web-platform-tests/pull/3299

Received on Friday, 15 July 2016 14:19:33 UTC