Update app.py

app.py

@@ -4,7 +4,7 @@ import torch
 
 class LlamaDemo:
     def __init__(self):
-        self.model_name = "meta-llama/Llama-2-70b-chat-hf"
+        self.model_name = "meta-llama/Llama-2-70b-chat"
         # Initialize in lazy loading fashion
         self._pipe = None