Added a levenshtein 'check' to the /data command.

If you make a typo, it will try to correct it automatically by comparing the levenshtein distance.
That way, common typos like "Feraligator" instead of "Feraligatr" will be automatically resolved and the data of Feraligatr will be shown, instead of an error that you need to check your spelling.

If this works as desired and such, maybe this could be implemented for commands like `/weakness` too?