Bug: How to hide returns 404

Created by: hidde

Summary

1. Search for 'visually hidden class' on a search engine (yeah… 😄 )
2. One of the first results may be https://a11yproject.com/posts/how-to-hide-content/
3. This page returns a 404, but is available on https://www.a11yproject.com/posts/2013-01-11-how-to-hide-content/

Expected result

There is redirect from old to new

Actual result

Looks like there's no redirect, so there's a 404 returned.

Additional Information

n/a