[web-animations-2] Broken references in Web Animations Level 2

[dontcallmedom-bot]

While crawling Web Animations Level 2, the following links to other specifications were detected as pointing to non-existing anchors:

• [ ] https://drafts.csswg.org/web-animations-1/#current-iteration

_{This issue was detected and reported semi-automatically by Strudy based on data collected in webref.}

[birtles]

@fantasai I guess this, #8994, and #8993 are from your recent edits to Web Animations 1?