Rakefile in ruby-vpi-9.0.0 vs Rakefile in ruby-vpi-10.0.0

@@ -114,11 +114,11 @@
 
 
 
 ## documentation
 
-desc 'Generate documentation.'
-task 'doc' => 'ref' do |t|
+desc 'Generate user documentation.'
+task 'doc' do |t|
   cd t.name do
     sh 'rake'
   end
 end