Update app.py

app.py

@@ -1,6 +1,6 @@
 import streamlit as st
 from PyPDF2 import PdfReader
-from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain_text_splitters import RecursiveCharacterTextSplitter
 from langchain_huggingface import HuggingFaceEmbeddings, HuggingFacePipeline
 from langchain_community.vectorstores import FAISS
 from langchain.prompts import PromptTemplate