Invalid command format if there are more than two numbers after the decimal

[nus-pe-bot]

Should probably notify the user that the invalid command format error is being caused by the extra decimal so it's clearer what's going on. It is specified in the UG, but it would help to also add it as an actual output.

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_{[original: nus-cs2113-AY1920S2/pe-interim#632]}

[jinfayap]

Team's Response

Found under the addingredient section in the UG that clearly stated that price can be inputted up to 2 decimal places.

Duplicate status (if any):

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