remove use of mdn.mozillademos.org

[peterbe]

What was wrong/why is this fix needed? (quick summary only)

Lots of samples use the deprecated https://mdn.mozillademos.org/files/... URLs.

Issue number (if there is an associated issue)

n/a

Anything else that could help us review it

See existing ongoing work: https://github.com/mdn/content/pulls?q=is%3Apr+is%3Aclosed+mdn.mozillademos.org

[peterbe]

This is actually the last IMAGE that I can find that uses mdn.mozillademos.org.
There are other live samples that still use mdn.mozillademos.org but not for images. In particular, I think there are a couple of .html and .ttf (fonts) files that still use it.

[github-actions]

Preview URLs

• https://pr6204.content.dev.mdn.mozit.cloud/en-US/docs/Games/Techniques/Crisp_pixel_art_look

Flaws

None! 🎉

External URLs

URL: /en-US/docs/Games/Techniques/Crisp_pixel_art_look
Title: Crisp pixel art look with image-rendering
on GitHub

No new external URLs