fix rdoc. see r27156

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27248 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2010-04-07 08:50:36 +00:00 · 2010-04-07 08:50:36 +00:00 · 4900daa4a3
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@ -70,6 +70,7 @@ end
 # * <tt> #minor(*param)                 </tt>
 #
 # Properties of a matrix:
+# * <tt> #empty?                        </tt>
 # * <tt> #real?                         </tt>
 # * <tt> #regular?                      </tt>
 # * <tt> #singular?                     </tt>