emoji images on the website are now missing

[seratch]

Description

I noticed that some images on the website seem to be missing now. I've not figured out what happens to them but emoji images like https://assets-cdn.github.com/images/icons/emoji/unicode/1f44b.png are no longer available. This is just a quick note. I will post comments when I find something more.

What type of issue is this? (place an x in one of the [ ])

• [ ] bug
• [ ] enhancement (feature request)
• [ ] question
• [x] documentation related
• [ ] testing related
• [ ] discussion

Requirements (place an x in each of the [ ])

• [x] I've read and understood the Contributing guidelines and have done my best effort to follow them.
• [x] I've read and agree to the Code of Conduct.
• [x] I've searched for any related issues and avoided creating a duplicate issue.

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Bug Report

The emoji images (e.g., https://assets-cdn.github.com/images/icons/emoji/unicode/1f44b.png ) on the website are now missing.

Reproducible in:

You can confirm it by just accessing https://slack.dev/steno/

Steps to reproduce:

1. Visit https://slack.dev/steno/

Expected result:

Of course, emoji images should be shown.

Actual result:

The page returns 404 for those images.

Attachments: