[DOC] Fix output of Shellwords.escape() by @anatol [Fixes GH-483]

* lib/shellwords.rb:  Fix output of Shellwords.escape()
https://github.com/ruby/ruby/pull/483
[ci-skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44211 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-12-15

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e