message: fix link to provisioning guides
diff: @@ -128,4 +128,4 @@ controller.middleware.send.use(function(bot, message, next) {
  ## What's Next?
  * [Continue learning about Botkit's core features](core.md)
  -* [View set-up guides for all the major platforms](/docs/provisioning/)
  +* [View set-up guides for all the major platforms](/provisioning/)
  