Editorial updates

Hi everyone,

During the WCAG 2.x issues call today we closed a couple of minor PRs. For transparency I wanted to highlight these.

We merged some typos and clarification in G219, a technique for the 2.2 dragging SC:
https://github.com/w3c/wcag/pull/1975

Minor clarification in the reflow understanding doc, saying what the nature of the exception is for graphics / tables:
https://github.com/w3c/wcag/pull/1656/

Kind regards,

-Alastair

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@alastc / www.nomensa.com<http://www.nomensa.com>