docs: Update asset-module.mdx

[renzp94]

修复使用 Optimizer Loader中的代码片段和下面的说明不一致的问题

Summary

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[chenjiahan]

Hi, can you update the English documentation too?

[renzp94]

Hi, can you update the English documentation too?

ok

[chenjiahan]

Thanks!