Add documentation for #thread_list_all in lib/debug.rb
Hey y'all, so I wanted to try submitting my first patch to Ruby and I thought documentation would be a good way to start.
I saw that there are a few undocumented methods so for now I am trying to document #thread_list_all().
- lib/debug.rb: Add documentation for #thread_list_all. [Misc #11580][ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52451 b2dd03c8-39d4-4d8f-98ff-823fe69b080e