[2021] Jaguar GR1 incorrect engines

Hello

This is not an error.

The Jaguar we have in game is an Jaguar GR.1, not a GR.1A.

GR.1s underwent trials and tests carrying active Sidewinders in Germany before they were upgraded with the Adour 104 and to GR.1A standard.

As such, its not incorrect for a GR.1 to have Sidewinders without being a GR.1A.