Update main.py

main.py

@@ -7,7 +7,7 @@ from linebot.exceptions import InvalidSignatureError
 from linebot.models import MessageEvent, TextMessage, TextSendMessage, ImageSendMessage, AudioMessage
 
 # Retrieve the PDF
-files = glob.glob('docs\*.pdf')
+files = glob.glob('docs/*.pdf')
 print(files)
 files_content = [client.files.upload(file=pathlib.Path(file_path)) for file_path in files]
 print(files_content)