docs: add stackblitz playground link in installation page

docs/content/1.getting-started/2.installation.md

@@ -34,6 +34,10 @@ That's it! You can now use all the components and composables in your Nuxt app
 As this module installs [@nuxtjs/tailwindcss](https://tailwindcss.nuxtjs.org/) and [@nuxtjs/color-mode](https://color-mode.nuxtjs.org/) for you, you should remove them from your `modules` and `dependencies` if you've previously installed them manually.
 ::
 
+## Playground
+
+:u-button{icon="i-simple-icons-stackblitz" label="Play on StackBlitz" size="lg" to="https://stackblitz.com/edit/nuxtlabs-ui?file=app.config.ts,app.vue"}
+
 ## Options
 
 | Key                      | Default                | Description                                      |
@@ -42,7 +46,7 @@ As this module installs [@nuxtjs/tailwindcss](https://tailwindcss.nuxtjs.org/) a
 | `global`                 | `false`                | Expose components globally.                      |
 | `icons`                  | `['heroicons']`        | Icon collections to load.                        |
 
-## Edge channel
+## Edge
 
 To use the latest updates pushed on the [`dev`](https://github.com/nuxtlabs/ui/tree/dev) branch, you can use `@nuxthq/ui-edge`.