* docs: add blockquote with custom alert title
* feat: add alert types to i18n and update blockquote rendering
* fix: wrong translation key
* feat: add alert title translation for all supported languages
Done by AI
* Markdown alerts
* refactor(alert): move alert color to variable.scss and simplify the style
* style: fix indent in render-blockquote
* feat(alert): add customizable alert icons for different alert types
* doc: add example usage of markdown alert
---------
Co-authored-by: Jimmy Cai <jimmy@cai.im>
