Update programmatically-determined-link-context.md

[sujisreerama]

Updated the glossary section to remove 'aria-decribedby' and changed the description from 'set of all elements' to 'link's accessible description, combined with the set of all elements'

<< Describe the changes >>

Closes issue(s):

• closes Should rules about link's name (b20e66, 5effbb, aizyf1, fd3a94) consider the title attribute? #1766

Need for Call for Review:
This will not require a Call for Review << choose reason(s): editorial changes (including to the applicability, expectation or examples section), changes to assumptions, background, accessibility support, change to website/test code (not rule), other (explain). >>

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[kengdoj]

Add accessible name also

[sujisreerama]

Made changes as requested by Kathy.

Updated

[Jym77]

We should add passed/failed examples of links with accessible description to the "link in context" rule.

I'm also not sure why we start a new PR instead of updating #1845 which is doing pretty much the same thing (adding accessible description), with more (adding examples) 🤔