fix typos. Patch by k_takata.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* remove trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40826 b2dd03c8-39d4-4d8f-98ff-823fe69b080e