Update 2012-08-02-rest-apis-with-symfony2-the-right-way.markdown

Dispatch a `kernel.controller` event to make sure annotations behave in the right way.

`@ParamConverter` annotations are only handled when this event is dispatched. Else those parameters are not filled in properly, and seemingly random errors start popping up.

I noticed this 'bug' when using your nice LinkRequestListener class for my project. This post has been very helpful for me, so I thought to give you something in return :smile: