Fix the sample API URL for the WebHooks unit tests.
Review Request #535 — Created March 31, 2017 and updated — Latest diff uploaded
The WebHooks unit tests were prefixing each API URL with "api/", which other unit tests don't do. This change simply removes the "api/" prefix. Testing Done: Ran unit tests. Saw that they didn't include the prefix anymore. Reviewed at https://reviews.reviewboard.org/r/8852/