Notice of minor change to Older Users overview page

Hi EOWG folks,

Per EOWG's Process for Minor Changes [1], this is to notify you of a minor change. :-)

Resource: Older Users and Web Accessibility: Meeting the Needs of Ageing Web Users
Updated business case references.
Updated section: https://www.w3.org/WAI/older-users/#promote
Diff showing updates: https://github.com/w3c/wai-older-users/pull/19/files

Let me know if any issues.

Best,
~Shawn


[1] Process for Minor Changes
https://www.w3.org/WAI/EO/wiki/EOWG_Participation_Info#Process_for_Minor_Changes
[[
... Changes are published.
EOWG is notified of changes and opportunity to review.
]]