Add i18n-zh pages for contribute module

[tuhaihe]

closes: #ISSUE_Number

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Change logs

Add i18n-zh pages for contribute module.

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[TomShawn]

Great work! My comments are mostly minor edits at the wording level.

[tuhaihe]

@TomShawn thanks for your review work. 👍

[TomShawn]

LGTM