[doc] Updated documentations for implicit type casting rules#4885

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jim19930609 merged 2 commits intotaichi-dev:masterfrom jim19930609:type_promotion_doc

May 10, 2022

+26-3

Commits on Apr 28, 2022

[doc] Updated documentations for type promotion rules
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Commits on May 6, 2022

Rearranged type promotion docs
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