Update app.py

app.py

@@ -1,7 +1,7 @@
 import streamlit as st
 from langchain.chains import RetrievalQA
 from langchain_community.llms import HuggingFaceHub
-from langchain.vectorstores import LangChainPinecone
+from langchain.vectorstores import Pinecone as LangChainPinecone
 from langchain_community.embeddings import HuggingFaceEmbeddings
 import pinecone
 from pinecone import Pinecone, ServerlessSpec