fix typo

app.py

@@ -38,7 +38,7 @@ def run(hf_token, service, game, r, nlp_command):
             return "please specify which game"
         if r is None:
             return "please choose the AI functionality"
-        if r == 'game':
+        if r == 'AI':
             if nlp_command in ["", None]:
                 return "please make sure the command is not empty"