Call for review: Autocomplete: include webauthn token example

Hey folks,
This pull request adds the new `webauthn` token to our autocomplete rule.
If you have any comments, please leave a review before February 1st:
https://github.com/act-rules/act-rules.github.io/pull/2017

Kind regards,

-- 
*Wilco Fiers*
Axe-core & Axe-linter product owner - WCAG 3 Project Manager - Facilitator
ACT Task Force