Fix typo in fire_pit.json

[AlexandriaOL]

Fixes #2 :)

[Povstalec]

Thanks, I doubt I would have event noticed this. If I may be so bold as to ask, how did you notice there was a typo?

[lexiwitch]

Ah, I noticed it in the log while I was testing mod compatibility :)

(Sorry if it's confusing responding via a different account lmao)