Update brain-even.py

Author: pwr44

brain_games/scripts/games/brain_even.py

@@ -3,10 +3,12 @@
 from brain_games.engine import engine
 
 GAME_TASK: str = 'Answer "yes" if the number is even, otherwise answer "no".'
+MIN_NUMBER = 1
+MAX_NUMBER = 10
 
 
 def get_num():
-    return randint(1, 10)
+    return randint(MIN_NUMBER, MAX_NUMBER)
 
 
 def is_even(num):