[Accessibility] Update Link Validator

[pmercier]

Please update Link Validator to be a more useful tool.

I am suggesting that the Canvas Link Validator be upgraded to be a more useful Tool.   Perhaps using AI logic to "Automatically" fix a broken links especially the ones that point to a previous courses in a prior Semester.  Sometimes I've had to work in HTML mode to find the link!

Also, display more information about where the offending Link can be found in the course which is sometimes hard to discern given what is displayed.   Perhaps something like the "UdoIt" format used for Accessibility checking?

[Andrew42]

I'd be happy to be proven wrong, but it appears that broken Studio links are not picked up in the Link Validator.

If that's true, a possible improvement would be to update the validator so that it lists these broken links.