docs: mention components in markdown.md

Signed-off-by: ZTL-UwU <zhangtianli2006@163.com>

Author: ZTL-UwU

content/1.getting-started/3.writing/1.markdown.md

@@ -4,14 +4,23 @@ description: How to write docs with the MDC syntax.
 icon: 'lucide:arrow-big-down'
 ---
 
-::Alert
+::alert
 ---
 to: https://content.nuxt.com/usage/markdown
 target: _blank
+icon: lucide:arrow-big-down
 ---
 Read the detailed MDC usage guide in the **Nuxt Content** Docs.
 ::
 
+::alert
+---
+to: /components/prose
+icon: lucide:box
+---
+See MDC components provided by **shadcn-docs-nuxt**.
+::
+
 ## Tips
 
 ### Hide title from toc