[docs] Update 60-assets.md (#8120)

Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>

documentation/docs/30-advanced/60-assets.md

@@ -16,18 +16,7 @@ title: Asset handling
 
 If you prefer to reference assets directly in the markup, you can use a preprocessor such as [svelte-preprocess-import-assets](https://github.com/bluwy/svelte-preprocess-import-assets).
 
-For assets included via the CSS `url()` function, you may find the [`experimental.useVitePreprocess`](https://github.com/sveltejs/vite-plugin-svelte/blob/main/docs/config.md#usevitepreprocess) option useful:
-
-```js
-// svelte.config.js
-export default {
-	vitePlugin: {
-		experimental: {
-			useVitePreprocess: true
-		}
-	}
-};
-```
+For assets included via the CSS `url()` function, you may find [`vitePreprocess`]([https://github.com/sveltejs/vite-plugin-svelte/blob/main/docs/config.md#usevitepreprocess](https://kit.svelte.dev/docs/integrations#preprocessors-vitepreprocess)) useful.
 
 ## Transforming