Error message for delete command can be refined

[nus-pe-bot]

Error message generated when user tries to delete from an empty list is that the index is invalid. While this is partially true, it is insufficient for new users to know how to modify their command, or how it is invalid would it be better to inform users about how it is invalid, or prompt them to list all data?

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_{[original: nus-cs2103-AY2223S2/pe-interim#4661] [original labels: severity.Low type.FeatureFlaw]}

[runoutofit]

Team's Response

the error message is clear enough for the user to rectify their command.

Duplicate status (if any):

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