Update app.py

app.py

@@ -190,7 +190,7 @@ def search(prompt: str):
     querying.connect("dense_text_embedder.embedding", "retriever.query_embedding")
     querying.connect("retriever", "document_joiner")
     querying.connect("document_joiner", "ranker")
-    pipeline.connect("ranker", "llm")
+    querying.connect("ranker", "llm")
     
     results = querying.run(
         {"dense_text_embedder": {"text": prompt},