Update Marionette.js documentation (3.4.3)

lib/docs/scrapers/marionette.rb

@@ -19,7 +19,7 @@ module Docs
     HTML
 
     version '3' do
-      self.release = '3.3.1'
+      self.release = '3.4.3'
       self.base_url = "https://marionettejs.com/docs/v#{release}/"
 
       html_filters.push 'marionette/entries_v3'