message: Remove broken Heroku badge
  [ci skip]
diff: @@ -171,7 +171,7 @@ images and packaged distributions are offered accordingly.
  | 11.x | :heavy_check_mark: | :heavy_check_mark: | |
  | 12.x | :x: | :x: | |
  -## Demo [![Heroku](https://heroku-badge.herokuapp.com/?app=juice-shop)](http://demo.owasp-juice.shop)
  +## Demo
  Feel free to have a look at the latest version of OWASP Juice Shop:
  <http://demo.owasp-juice.shop>
  