merge revision(s) 39388:

	* lib/rexml/document.rb (REXML::Document.entity_expansion_text_limit):
	  fix a typo in comment in r39384.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39660 b2dd03c8-39d4-4d8f-98ff-823fe69b080e