Use the correct Github URL.

fc02b82e · Bernhard Fürst · 982ecdbf · fc02b82e
Commit fc02b82e authored Apr 15, 2016 by Bernhard Fürst
--- a/plugin.rb
+++ b/plugin.rb
@@ -2,7 +2,7 @@
 # about: Embed Etherpad Lite pads using Onebox.
 # version: 1.0
 # authors: Bernhard Fürst
-# url: https://dev.fuerstnet.de/discourse-onebox/embed-etherpad-lite
+# url: https://github.com/fuerst/embed-etherpad-lite

 class Onebox::Engine::EtherpadLiteOnebox
  include Onebox::Engine