Update app.py

app.py

@@ -8,7 +8,7 @@ from langchain.chains import RetrievalQA
 
 def loading_pdf(): return 'Loading...'
 
-def pdf_chaings(pdf_doc, repo_id):
+def pdf_changes(pdf_doc, repo_id):
     loader = OnlinePDFLoader(pdf_doc.name)
     documents = loader.load()
     text_splitter = CharacterTextSplitter(chunk_size=300, chunk_overlap=0)