[ruby/irb] Fix help-message (https://github.com/ruby/irb/pull/506)
https://github.com/ruby/irb/commit/a55ace0791
[ruby/irb] Fix help-message (https://github.com/ruby/irb/pull/506)
https://github.com/ruby/irb/commit/a55ace0791