Update Node.js documentation (7.2.0, 6.9.1, 4.6.1)

lib/docs/scrapers/node.rb

@@ -23,7 +23,7 @@ module Docs
     HTML
 
     version do
-      self.release = '7.0.0'
+      self.release = '7.2.0'
       self.base_url = 'https://nodejs.org/dist/latest-v7.x/docs/api/'
     end