Update JavaScript documentation

assets/stylesheets/pages/_mdn.scss

@@ -131,4 +131,8 @@
 
     dd { margin: 0; }
   }
+
+  iframe.interactive {
+    width: 100%;
+  }
 }

lib/docs/scrapers/mdn/javascript.rb

@@ -3,6 +3,7 @@ module Docs
     prepend FixInternalUrlsBehavior
     prepend FixRedirectionsBehavior
 
+    # release = '2021-10-22'
     self.name = 'JavaScript'
     self.base_url = 'https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference'