Update app.py

app.py

@@ -1,6 +1,6 @@
 import gradio as gr
-from module import preprocessing_pipeline, conversational_rag
-from module import system_message, user_message
+from pipeline import preprocessing_pipeline, conversational_rag
+from piepeline import system_message, user_message
 from haystack.dataclasses import ChatMessage
 import time