* lib/racc/parser.rb: Fix typo

s/Extentions/Extensions/

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-11-29

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43906 b2dd03c8-39d4-4d8f-98ff-823fe69b080e