[PE-D][Tester B] Error message for invalid index for delete_game command is not clear

[soc-se-bot]

Currently, the list has 2 people. If I run delete_game 5, I get an error of invalid position. If I run delete_game 0, it just says invalid command format. Even for delete_game 0, the explanation should exist about invalid position.

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Labels: type.FunctionalityBug severity.Low original: T1duS/ped#2

[flyingsalsa]

Unfortunately this is intended behaviour based on how the parser is implemented, the error message of the index error (isn't a positive integar) is at the bottom and needs to be scrolled to read