docs: migrate to @nuxthq/ui-kit (#405)

Co-authored-by: Sébastien Chopin <seb@nuxt.com>

docs/content/2.elements/7.kbd.md

@@ -1,7 +1,10 @@
 ---
-github: true
 title: 'Keyboard Key'
 description: Display a keyboard key in a text block.
+links:
+  - label: GitHub
+    icon: i-simple-icons-github
+    to: https://github.com/nuxtlabs/ui/blob/dev/src/runtime/components/elements/Kbd.vue
 navigation:
   title: 'Kbd'
 ---