Update 1991/westley in bugs.md

Added to the INABIAF that not only is there a way to cheat which was
documented at the time and which I discovered when fixing the code but
there is actually a way that I discovered recently where you can cheat
but it still actually wins! Does that mean it is cheating as well? :-)
Or is it that one cannot actually cheat a cheater? :-) Either way this
felt like a good thing to add to the bugs.md as well.

bugs.md

@@ -682,8 +682,8 @@ someone called Cody's late grandmother said to him: 'it's not cheating unless
 you're caught'. :-)
 
 Please don't try and fix it as it's not a bug and was actually documented as a
-possibility. Can you find out how?
-
+possibility. Can you find out how? There's also a way to make it so that even
+when you're cheating it ends up winning! Can you figure that out as well?
 
 
 # 1992