rebranding api docs from asc to mdfc

[ariklin]

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[ariklin]

@ruowan - please consider my recent modifications.

[ruowan]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[ruowan]

The model validation and semantic validation is not introduced in this PR. I add approved label. But @ariklin pls fix prettier check error

[ariklin]

@ruowan - prettier check pass, thnak you for your help

[ruowan]

LGTM, merged. @ariklin