Make the text simpler and hide the fact about the specifics of an attack

Season-2/Level-3/hack.txt

@@ -1,7 +1,6 @@
-Here are two steps to showcase the XSS attack:
+Here are two steps to simulate an attack:
 
 1. Start the applicsation as instructed in 'code.py'
 2. Enter in the input field for planet the following content: <img src='x' onerror='alert(1)'>
 
-You will see that an alert dialog box opens instead of being presented with a message
-that such a planet is unknown to the system.
+Your application must present a message that such a planet is unknown to the system.