Error when viewing screenshots

[chemi392]

All links to screenshots in readme.rst fail to open with the following error:
Error 503 Backend is unhealthy

[seratch]

Hi @chemi392, thanks for taking the time to report the issue! You are talking about the images in https://github.com/slackapi/python-slack-events-api/tree/main/example, right? We are unsure about how we can resolve it but will see what we can do for it.