Add Hex integration

[ShanlanLi]

Info

• Description

  • [ What's changed? Which parts of the docs are affected? ]

• Notes

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• Related code PR

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• Related doc issue

  Resolves Document Hex integration #2152 (comment)

For reviewers

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Before merging

• I have checked the doc site preview, and the updated parts look good.

• I have acquired the approval from the owner (and optionally the reviewers) of the code PR and at least one tech writer (CharlieSYH, emile-00, & hengm3467).

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