update example app

plugins/websocket/examples/svelte-app/svelte.config.js

@@ -0,0 +1,15 @@
+import adapter from '@sveltejs/adapter-auto';
+import { vitePreprocess } from '@sveltejs/kit/vite';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	// Consult https://kit.svelte.dev/docs/integrations#preprocessors
+	// for more information about preprocessors
+	preprocess: vitePreprocess(),
+
+	kit: {
+		adapter: adapter()
+	}
+};
+
+export default config;