The homepage for libyaml in psych.rb points to a "holding page".
Psych is a YAML parser and emitter. Psych leverages
libyaml[http://libyaml.org] for it's YAML parsing and emitting capabilities.
... etc ...
That second line should be:
libyaml[http://pyyaml.org/wiki/LibYAML] for its YAML parsing and emitting capabilities.
or you could point to libyaml's github page:
libyaml[https://github.com/zerotao/libyaml] for its YAML parsing and emitting capabilities.
(I also removed the apostrophe from "its"!)
It's a silly one, and I should have noticed the difference! :-)
(Update: I took out all the comment hashes because GitHub-flavored Markdown was having too much fun with them... )
Let's point it at the wiki page. Can you send a pull request?
Closing this because I merged the pull request.