Update src/streamlit_app.py

src/streamlit_app.py

@@ -210,7 +210,7 @@ def initialize_pinecone():
 def initialize_bm25():
     with open("bm25_model.pkl", "rb") as f:
         bm25 = pickle.load(f)
-    retrun bm25
+    return bm25
 
 @st.cache_resource(show_spinner=False)
 def initialize_groq():