article redirect not working

Created by: scottaohara

The Safari keyboard article had the URL of https://a11yproject.com/posts/safari-keyboard-navigation/

It was updated in Nov. 2019 and the URL was changed to https://a11yproject.com/posts/macos-browser-keyboard-navigation/

There is a redirect noted in the markdown file, but the old URL goes to a 404 page rather than the new article.