FF92 AVIF: Remove experimental feature and update accept headers.

[hamishwillee]

FF92 now supports AVIF: https://bugzilla.mozilla.org/show_bug.cgi?id=1682995.
This removes the experimental feature and updates the accept headers.

This is part of docs work in #7744

[github-actions]

Preview URLs

• https://pr7873.content.dev.mdn.mozit.cloud/en-US/docs/Mozilla/Firefox/Experimental_features
• https://pr7873.content.dev.mdn.mozit.cloud/en-US/docs/Web/HTTP/Content_negotiation/List_of_default_Accept_values

Flaws

Note! 1 document with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox
on GitHub
Flaw count: 2

• macros:
  • /en-US/docs/Web/API/Document/autoplayPolicy does not exist
• sectioning:
  • 'Property_math-style' is not a unique ID in this HTML (temporarily changed to Property_math-style_2)

External URLs

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox
on GitHub

• https://bugzilla.mozilla.org/show_bug.cgi?id=1057233 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1099557 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1178765 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1190623 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1205133 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1223880 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1245183 (2 times)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1280613 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1312588 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1318984 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1335970 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1340422 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1390089 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1401304 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1405706 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1435733 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1506289 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1506364 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1509527 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1520690 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1539075 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1565562 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1602129 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1605153 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1605154 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1607954 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1619947 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1620055 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1621781 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1639963 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1646096 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1655722 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1665975 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1673309 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1701512 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=558594 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=778617 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=840640 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=917755 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=918189 (1 time)
• https://bugzilla.mozilla.org/show_bug.cgi?id=934425 (1 time)
• https://drafts.csswg.org/css-inline/ (1 time)
• https://drafts.csswg.org/css-sizing-4/ (1 time)
• https://en.wikipedia.org/wiki/Graphics_Processing_Unit (1 time)
• https://gpuweb.github.io/gpuweb/ (1 time)
• https://jpeg.org/jpegxl/ (1 time)
• https://nightly.mozilla.org/ (2 times)
• https://support.mozilla.org/en-US/kb/about-config-editor-firefox (1 time)
• https://www.mozilla.org/en-US/firefox/developer/ (2 times)

---

URL: /en-US/docs/Web/HTTP/Content_negotiation/List_of_default_Accept_values
Title: List of default Accept values
on GitHub

No new external URLs

(this comment was updated 2021-08-16 22:44:34.685506)

[Rumyra]

Thanks @hamishwillee 👍 could the conflicts be because markdown?

[hamishwillee]

@Rumyra Yes, that was the problem. Bit of a pain to be out of sync. Self merging :-)