Fix docs

README.md

@@ -103,11 +103,11 @@ Hypernova.configure do |config|
 end
 ```
 
-In your controller, you’ll need an `:around_filter` so you can opt into Hypernova rendering of view partials.
+In your controller, you’ll need an `:around_action` so you can opt into Hypernova rendering of view partials.
 
 ```ruby
 class SampleController < ApplicationController
-  around_filter :hypernova_render_support
+  around_action :hypernova_render_support
 end
 ```