docs(installation): add documentation for intellisense on SFC objects (#382)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

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

@@ -73,16 +73,35 @@ If you do so, you'll need to add the following to your `.vscode/settings.json`:
 }
 ```
 
-Also, the extension won't work when writing classes in your `app.config.ts` by default. You can add the following to your `.vscode/settings.json` to fix this:
+Note, the extension won't work when writing classes in your `app.config.ts` by default.
+
+Also, you might want IntelliSense on objects in your SFC by prefixing with `/*ui*/`.
+
+To enable these two features, you can add the following to your `.vscode/settings.json`:
 
 ```json [.vscode/settings.json]
 {
   "tailwindCSS.experimental.classRegex": [
     ["ui:\\s*{([^)]*)\\s*}", "[\"'`]([^\"'`]*).*?[\"'`]"]
+    ["/\\*ui\\*/\\s*{([^;]*)}", ":\\s*[\"'`]([^\"'`]*).*?[\"'`]"],
   ]
 }
 ```
 
+An example SFC using IntelliSense (note the `/*ui*/` prefix, also works with `ref()`):
+
+```vue [example.vue]
+<template>
+  <UCard :ui="ui" />
+</template>
+
+<script setup>
+const ui = /*ui*/ {
+  background: 'bg-white dark:bg-slate-900'
+}
+</script>
+```
+
 You can also add the following to your `.vscode/settings.json` to enable IntelliSense when using the `ui` prop:
 
 ```json [.vscode/settings.json]