fixing indention in app.py

app.py

@@ -71,9 +71,10 @@ def main():
                                                                            st.session_state.embedding_model)
     if (user_query) and (st.button("Get Answer")):
         num_doc_before_rerank=15 
-        st.session_state.retriever= st.session_state.KNOWLEDGE_VECTOR_DATABASE.as_retriever(search_type="similarity", 
+        st.session_state.retriever= st.session_state.KNOWLEDGE_VECTOR_DATABASE.as_retriever(search_type="similarity",
+                                                                                            search_kwargs={"k": num_doc_before_rerank})
         
-        st.write("### Please wait while we are getting the answer.....")                                                                                  search_kwargs={"k": num_doc_before_rerank})
+        st.write("### Please wait while we are getting the answer.....")                                                                                 
         llm = ChatNVIDIA(
             model=READER_MODEL_NAME,
             api_key= os.get("NVIDIA_API_KEY"),