Update app.py

app.py

@@ -24,7 +24,7 @@ gdown.download('https://drive.usercontent.google.com/download?id=14k2xUrvJ32trhL
 
 
 
-with open("message.txt", "r", encoding="utf-8") as f:
+with open("data.txt", "r", encoding="utf-8") as f:
     dataset = f.read()
     chars = sorted(list(set(dataset)))
     vocab_size = len(chars)