Couple more 1 week final calls

Hey folks,

I have a few pull requests that will be merged next week:

Improve image-button-name examples
  https://github.com/act-rules/act-rules.github.io/pull/1033

Change "not whitespace" to "not empty" button-acc-name
  https://github.com/act-rules/act-rules.github.io/pull/1029

Change "not whitespace" to "not empty" button-acc-name
  https://github.com/act-rules/act-rules.github.io/pull/1029


If you have any concerns, with these changes, please lreave "changes
requested" review.

-- 
*Wilco Fiers*
Axe for Web product owner - Co-facilitator WCAG-ACT - Chair ACT-R