docs: remove twoslash from code sample

docs/1.getting-started/9.layers.md

@@ -31,7 +31,7 @@ export default defineNuxtConfig({
 
 You can also pass an authentication token if you are extending from a private GitHub repository:
 
-```ts twoslash [nuxt.config.ts]
+```ts [nuxt.config.ts]
 export default defineNuxtConfig({
   extends: [
     // per layer configuration