[ruby/rdoc] chore: Remove unnecessary argument for join method
join
https://github.com/ruby/rdoc/commit/4a1c74bc0a
[ruby/rdoc] chore: Remove unnecessary argument for
join
methodhttps://github.com/ruby/rdoc/commit/4a1c74bc0a