docs: lots of improvements

docs/content/2.elements/5.icon.md

@@ -0,0 +1,20 @@
+---
+github: true
+---
+
+## Usage
+
+::component-card
+---
+props:
+  name: 'i-heroicons-light-bulb'
+---
+::
+
+::alert{icon="i-heroicons-exclamation-triangle"}
+When playing with the `name` prop above, you won't be able to use any icon you want as icons are bundled on build as explained in the [theming section](/getting-started/theming#icons).
+::
+
+## Props
+
+:component-props