Merge pull request #24885 from javiervidal/3_0_release_notes

Fix link in 'Ruby on Rails 3.0 Release Notes' [ci skip]

guides/source/3_0_release_notes.md

@@ -86,7 +86,7 @@ $ cd myapp
 
 ### Vendoring Gems
 
-Rails now uses a `Gemfile` in the application root to determine the gems you require for your application to start. This `Gemfile` is processed by the [Bundler](http://github.com/bundler/bundler,) which then installs all your dependencies. It can even install all the dependencies locally to your application so that it doesn't depend on the system gems.
+Rails now uses a `Gemfile` in the application root to determine the gems you require for your application to start. This `Gemfile` is processed by the [Bundler](http://github.com/bundler/bundler) which then installs all your dependencies. It can even install all the dependencies locally to your application so that it doesn't depend on the system gems.
 
 More information: - [bundler homepage](http://bundler.io/)