Call for review: ARIA required owned elm; fix parser issue in pass 3

Hey folks,

This pull requests fixes a parser issue in passed example 3 of the aRIA
required owned elements rule:
https://github.com/act-rules/act-rules.github.io/pull/1850/files

If you have any comments, please leave a review by Friday June 10th.

Kind regards,

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