If you think it's a good contribution to the jam, that would be fine. But feel free to keep the Spanish. Maybe if there was a way to switch easily, that would be neat. This is a global effort and not everything has to be in English :-) That said, judges will need an English version most likely.
Also, not sure if they can help, but we do have a Spanish proficient sponsor now; IndieDome. Keep an eye out for when we announce our Discord server; they may be in there and able to assist.
EDIT: IndieDome can help with Portuguese, not Spanish. Sorry for any confusion :)