Dead link in ltree documentation

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/10/static/ltree.html
Description:

Hi, 

https://www.postgresql.org/docs/current/static/ltree.html links to
www.dmoz.org which now returns a 403, since being closed down in 2017. 

Maybe it could link to the mirror https://dmoztools.net/ or the wikipedia
page instead.