Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/halo-sigs/plugin-highlightjs/blob/main/OWNERS)~~ [guqing]
Approvers can indicate their approval by writing `/approve` in a comment
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为 highlight.js 脚本添加 defer 属性,防止在加载过程中阻塞 HTML 的渲染而造成白屏。
/kind improvement