Tiny Typo Fix

It had come to my attention multiple times that there was a very particular "e" missing from a single line of written word, resulting in a mistaken "thos" rather than the intended "those". This has since been changed and I have added the missing "e" to both the playable and Twine code versions of the game.

If there are any other significant typos, please feel free to let me know. I'll be sure to look out for thos in the future.