fix poseidon link in readme (#223)

Author: pezeee001

README.md

@@ -81,7 +81,7 @@ You can rename `modorganizer-basic_games-xxx` to whatever you want (e.g., `basic
 | Tony Hawk's Underground 2 | [uwx](https://github.com/uwx) | [game_thug2.py](games/game_thug2.py) | |
 | Trackmania United Forever — [STEAM](https://store.steampowered.com/app/7200/Trackmania_United_Forever/) | [uwx](https://github.com/uwx) | [game_tmuf.py](games/game_tmuf.py) | |
 | Yu-Gi-Oh! Master Duel — [STEAM](https://store.steampowered.com/app/1449850/) | [The Conceptionist](https://github.com/the-conceptionist) & [uwx](https://github.com/uwx) | [game_masterduel.py](games/game_masterduel.py) | |
-| Zeus and Poseidon — [GOG](https://www.gog.com/game/zeus_poseidon) / [STEAM](https://store.steampowered.com/app/566050/Zeus__Poseidon/) | [Holt59](https://github.com/holt59/) | [game_zeusandpoiseidon.py](games/game_zeusandpoiseidon.py) | <ul><li>mod data checker</li></ul> |
+| Zeus and Poseidon — [GOG](https://www.gog.com/game/zeus_poseidon) / [STEAM](https://store.steampowered.com/app/566050/Zeus__Poseidon/) | [Holt59](https://github.com/holt59/) | [game_zeusandposeidon.py](games/game_zeusandposeidon.py) | <ul><li>mod data checker</li></ul> |
 
 ## How to add a new game?