* ext/psych/lib/psych.rb: [DOC] Fix a dead link in Psych by @rochefort [ci skip][fix GH-593]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45577 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-04-13

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45578 b2dd03c8-39d4-4d8f-98ff-823fe69b080e