Update cli_app.py

cli_app.py

@@ -3,7 +3,7 @@ from query_data import get_chain
 
 
 if __name__ == "__main__":
-    with open("vectorstore.pkl", "rb") as f:
+    with open("medvectorstore.pkl", "rb") as f:
         vectorstore = pickle.load(f)
     qa_chain = get_chain(vectorstore)
     chat_history = []