docs(en): merge docs/main into docs-cn/main @ 15820b06

[docschina-bot]

此 PR 自动生成。

合并 slidevjs/docs 的修改至本仓库（@ 15820b06）

以下文件存在冲突，可能需要重新翻译：

• [ ] .vitepress/config.ts
• [ ] .vitepress/theme/components/Environment.vue
• [ ] tree.
• [ ] tree.
• [ ] addons/write-an-addon.md
• [ ] builtin/components.md
• [ ] builtin/layouts.md
• [ ] custom/config-monaco.md
• [ ] custom/config-parser.md
• [ ] custom/config-windicss.md
• [ ] custom/directory-structure.md
• [ ] custom/fonts.md
• [ ] custom/highlighters.md
• [ ] custom/index.md
• [ ] custom/vue-context.md
• [ ] guide/animations.md
• [ ] guide/drawing.md
• [ ] guide/editors.md
• [ ] guide/exporting.md
• [ ] guide/faq.md
• [ ] guide/hosting.md
• [ ] guide/index.md
• [ ] guide/install.md
• [ ] guide/navigation.md
• [ ] guide/syntax.md
• [ ] guide/why.md
• [ ] index.md
• [ ] themes/use.md
• [ ] themes/write-a-theme.md

请解决所有冲突后提交到此 pull request，可直接在 Github 修改、切换到 sync-15820b06 分支进行修改或者使用 Github Desktop 拉取此 pr 修改并提交。

禁止使用 Squash Merge 来合并此 Pull Request！

使用该操作会导致上游仓库的内容丢失，并致使下一次合并产生冲突。