Update app.py

app.py

@@ -181,7 +181,8 @@ def search(prompt: str):
     
     results = querying.run(
         {"dense_text_embedder": {"text": prompt},
-         "sparse_text_embedder": {"text": prompt}}
+         "sparse_text_embedder": {"text": prompt},
+         "ranker": {"text": prompt}}
     )