Call for review: Editorial updates to the meta-viewport rule

Hey folks,

This pull request updates the language of the meta-viewport rule. I don't
think it changes how the rule works, but I thought I'd put it out for
review regardless. You can find the changes here:
https://github.com/act-rules/act-rules.github.io/pull/1822

If you have any comments, please review the pull request by Friday April
15th.

Kind regards,

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