Fix: updated FedEx carrier curl

[hollyabrams]

No description provided.

[Justintime50]

Hey Holly, for Fedex (unless something has changed), the proper endpoint is the /register one as listed here. FedEx is alone in this regard as all other carriers do hit the standalone /carrier_accounts endpoint

[hollyabrams]

Hey Holly, for Fedex (unless something has changed), the proper endpoint is the /register one as listed here. FedEx is alone in this regard as all other carriers do hit the standalone /carrier_accounts endpoint

Hey Justin, the current curl creates the account but an authentication error is being returned when the account is used. This updated curl works to both create an account and get rates successfully.