Issue on docs: Guides Data>Table Design>Data Types

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Path:/zh-CN/docs/table-design/data-type
Version: 2.1
Language: 中文, Enginsh

DATE/DATETIME 'Storeage (bytes)' was wrong.

correct:

DATE: 3 bytes(24bit)
DATETIME: 8bytes(64bit)

refer: https://github.com/apache/doris/blob/33df5ba180f25af140b332f491958c0c7a77337a/be/src/runtime/primitive_type.h#L186

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