PyAI: No notifcation when commenting out mistyped command names

[Pr0nogo]

Sometimes PyAI doesn't tell you that you have a typo in your aiscript opcode, e.g. 'attack_dd' instead of 'attack_add', and will comment out the offending text. This can break scripts and seems counterintuitive to what the compiler does elsewhere, like warning you about parameter typos.