Update app.py

app.py

@@ -399,7 +399,7 @@ def extract_ingredients(transcription: str) -> str:
     unique_ingredients = sorted(set(match.strip() for match in matches))
     return ", ".join(unique_ingredients)
     
-def chess_move
+def chess_move() -> str:
     """
     Analyses a chess image and returns the correct move to win
     """