low "quality" vision is an unfortunate wording - "low vision" is the generally accepted term. plus minor tweak to last sentence to make it flow better.
A few minor grammar fixes, better explanation of the use of visually hidden `<span>`s and the use of `title`, better example and explanation for interactive elements
* adding accessibility informational page
* adding in accessibility-minded examples
* adding accessibility practices to icon markup example
* updating doc site icons with accessibility best practices
* updating homepage with accessibility information
Fix#6133