docs(en): merge docs/main into docs-fr/main @ 7a04557f

[docschina-bot]

This PR was automatically generated.

Merge changes from slidevjs/docs（@ 7a04557）

The following files have conflicts and may need new translations:

• .gitignore
• .vitepress/config.ts
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• addons/write-an-addon.md
• builtin/components.md
• builtin/layouts.md
• custom/config-mermaid.md
• custom/config-monaco.md
• custom/config-shortcuts.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
• tree.

Please fix the conflicts by pushing new commits to this pull request, either by editing the files directly on GitHub, or switch to the sync-7a04557f branch to make changes.

DO NOT SQUASH MERGE THIS PULL REQUEST!

Doing so will "erase" the commits from upstream and cause them to show up as conflicts the next time we merge.