* lib/csv.rb: [DOC] Fix typo in CSV.parse_line by @funky-bibimbap
  [Fixes GH-430] https://github.com/ruby/ruby/pull/430


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43569 b2dd03c8-39d4-4d8f-98ff-823fe69b080e