fix: remove invalid symbols and keep them consistent with the original

EbookFoundation / free-programming-books

:books: Freely available programming books

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Closed ruishawn closed 6 months ago

ruishawn commented 6 months ago

Update docs/CONTRIBUTING-zh.md, remove invalid symbols and keep them consistent with the original.

eshellman commented 6 months ago

Thanks, and welcome to free-programming-books!