migrates the Jamis template to RDoc 2.x, the root Rakefile requires RDoc 2.2

To understand the changes in horo.rb check rdoc/template.rb in a RDoc 2.x

1 files changed, 1 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 19e532bc0b..7a8c5604b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,7 +45,7 @@ elsif RUBY_ENGINE == "jruby"
 end
 
 group :documentation do
-  gem 'rdoc', '2.1'
+  gem 'rdoc', '2.2'
 end
 
 if ENV['CI']