add Chinese documentation link

[zjp-CN]

[the-mikedavis]

I'm hesitant to link to non-official documentation from the official docs

[A-Walrus]

I'm hesitant to link to non-official documentation from the official docs

IMO it's fine as long as it as clearly labeled as unofficial.

[zjp-CN]

We can put it in the wiki.

[the-mikedavis]

I think adding it to the main wiki page would be good 👍 https://github.com/helix-editor/helix/wiki

[kirawi]

We could also host the docs in the repo.

[zjp-CN]

We could also host the docs in the repo.

Thanks for the idea. But I think it will bring drawbacks more then benefits.

I've updated the Wiki. So I'm gonna close this PR. Thanks all.