[i18n-<zh>] Translating trainer.md to chinese

[chenin-wang]

What does this PR do?

Part of #26803

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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@stevhliu and @MKhalusova

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[stevhliu]

Thanks for your contribution!

I can only review the technical structure and format of the docs because I can't read Chinese. Do you know of any other contributors who would be interested in reviewing your work? Also pinging @jiaqiw09 and @statelesshz (if you have any free time to review this 🙏 ) who have translated Chinese docs in the past.

[stevhliu]

Should this be translated?

Suggested change

	### checkpoints
	### checkpoints

[chenin-wang]

In my opinion, translating checkpoints into Chinese is not as easy to understand as checkpoints.

[chenin-wang]

Just like the tokenizer

[stevhliu]

Hey @chenin-wang! Happy to merge once someone who can read Chinese has reviewed your translation! Do you know anyone who might be interested? The forums and Discord are also a good place to look for other collaborators :)

[github-actions]

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