Sync kit docs (#1451)

sync kit docs

Co-authored-by: svelte-docs-bot[bot] <196124396+svelte-docs-bot[bot]@users.noreply.github.com>

Author: github-actions[bot]

apps/svelte.dev/content/docs/kit/30-advanced/40-service-workers.md

@@ -127,15 +127,15 @@ navigator.serviceWorker.register('/service-worker.js', {
 
 Setting up proper types for service workers requires some manual setup. Inside your `service-worker.js`, add the following to the top of your file:
 
-```original-js
+```js
 /// <reference types="@sveltejs/kit" />
 /// <reference no-default-lib="true"/>
 /// <reference lib="esnext" />
 /// <reference lib="webworker" />
 
 const sw = /** @type {ServiceWorkerGlobalScope} */ (/** @type {unknown} */ (self));
 ```
-```generated-ts
+```ts
 /// <reference types="@sveltejs/kit" />
 /// <reference no-default-lib="true"/>
 /// <reference lib="esnext" />