Fixed chat example.

chat.py

@@ -307,7 +307,7 @@ with gr.Blocks() as iface_chat:
                 "Human: Why cats meow?</s>\n"
                 "AI: Cats meow as a way of communicating with humans or other cats. "
                 "They may meow to get attention, express hunger or thirst, "
-                "indicate pain or discomfort, seek affection, or simply to say hello."
+                "indicate pain or discomfort, seek affection, or simply to say hello.",
                 "Could you remind me please who was Neil Armstrong?",
                 "bloomz",
                 True,