Typo in instruction message for `addm` and `editm`

[nus-pe-bot]

addm and editm do not take alphanumeric inputs for h and w, but rather strictly numeric. There is a typo in the instruction message by stating it allows alphanumeric, which would confuse users.

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_{[original: nus-cs2103-AY2324S2/pe-interim#1644] [original labels: type.FunctionalityBug severity.Low]}

[SeaHogs]

Team's Response

Measured in cm and is alphanumerical are not two mutually exclusive condition, I can have a height measured as 173, and it is measured in cm or I can have a weight of 65, measured in kg. In the UG it has also clearly stated the format of the input.

Duplicate status (if any):

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