Update app.py

app.py

@@ -127,7 +127,7 @@ chat_interface = gr.ChatInterface(
     ],
     stop_btn=None,
     examples=[
-        ["If you replace all the parts of a boat, is it still the same boat? ?"],
+        ["If you replace all the parts of a boat, is it still the same boat?"],
         ["Can you explain briefly to me the difference between left and right hegelians?"],
         ["Explain the Computational theory of mind"],
         ["What is a justified true belief?"],