* add beta note and mention using high contrast theme * update screenshots * add feature preview note to step * update settings menu item * update language * use full theme name * Apply suggestions from code review Co-authored-by: Matt Pollard <mattpollard@users.noreply.github.com> * version text * version screenshots too * build * move beta callout below Co-authored-by: Matt Pollard <mattpollard@users.noreply.github.com> Co-authored-by: Leona B. Campbell <3880403+runleonarun@users.noreply.github.com>