Inconsistent error handling

[nus-pe-bot]

• The format specifies that the INDEX for edit command be positive and within the list
• These two errors falls outside that constraint, and should return similar/same errors
• edit -1 should return a similar error, e.g. "The elderly index provided is out of bounds from the start of the list" or simply "The elderly index provided cannot be less than 1"

video:https://raw.githubusercontent.com/nus-cs2103-AY2425S1/pe/master/files/783d1075-7784-4846-9a63-6c38eba4df69.mov

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_{[original: nus-cs2103-AY2425S1/pe-interim#2663] [original labels: type.FeatureFlaw severity.Low]}

[GabrielCWT]

Team's Response

The message is correct. The history command provided is invalid due to the index not being a positive integer.

Duplicate status (if any):

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