Fix broken links in README.md

[edent]

Changed jacobxperez to tryoxiss - removed broken links.

[tryoxiss]

I'm flattered someone would take time out of thier day to fix an issue on a repository I own, but this isn't something I intend to maintain. I forked upstream to make a few small fixes a while back, but jacob (lead maintainer) needed to private the repository to change the name of the font (after failing to get written permission for using 'Atkinson Hyperlegible' as part of the font name), and github crowned this as the new upstream (since it was the oldest fork that was public).

This was not a fault of yours, of course. I didn't notice the repo has been crowned until this PR was made, and as a result had nothing in here to signify that it was not something I would be maintaining, as normally a repository that isn't visibly marked as a fork means it will be maintained.

As a result I am not entirely sure what to do with this. On one hand, there is no reason not to merge a perfectly sound commit, at the same time I see little point in doing so.

[edent]

I understand. I was maintaining my own version of the original Atkinson as "Extended Hyperlegible" https://github.com/edent/extended-hyperlegible

But this version has more glyphs etc.

Thanks for letting me know. Obviously, whatever you choose to do is fine with me :-)

[jacobxperez]

@edent I have changed the name Lexica Ultralegible because I was unable to obtain permission from the Braille Institute to keep using the name Atkinson Hyperlegible. However, I was allowed to continue the project under a different name. With Lexica Ultralegible, we aim to continue the mission of the original typeface by maintaining the core values of legibility and readability while introducing a fresh identity.