Final call: Add condition list instructions to rule design doc

Hey folks,
No rule this time, but a design doc. We've created a proposal on how to
format conditional lists in rules. This final call lasts for 1 week, ending
on July 10th. If you have any comments, please leave a review:
https://github.com/act-rules/act-rules.github.io/pull/1345

Kind regards,

-- 
*Wilco Fiers*
Axe for Web product owner - Co-facilitator WCAG-ACT - Chair ACT-R