Update Node.js documentation (10.6.0)

Author: Thibaut

lib/docs/scrapers/node.rb

@@ -23,7 +23,7 @@ class Node < UrlScraper
     HTML
 
     version do
-      self.release = '10.4.0'
+      self.release = '10.6.0'
       self.base_url = 'https://nodejs.org/dist/latest-v10.x/docs/api/'
     end