Rake information section links in documentation are broken

[apatniv]

All four links that appear here in documentation: https://ruby.github.io/rake/index.html#label-Rake+Information are broken

It appears that usage of {Rake command-line}[link:doc/command_line_usage.rdoc] works within github but fails in rdocs.

Doing the following changes works in rdocs

-* {Rake command-line}[link:doc/command_line_usage.rdoc]
+* {Rake command-line}[rdoc-ref:command_line_usage]

[apatniv]

All the four links are broken

[apatniv]

May be relevant: https://github.com/ruby/rdoc/issues/618