docs: fix admin actor type -> user (#9028)

www/apps/resources/app/recipes/marketplace/examples/restaurant-delivery/page.mdx

@@ -1160,7 +1160,7 @@ export default defineMiddlewares({
       method: ["POST", "DELETE"],
       matcher: "/restaurants/:id/**",
       middlewares: [
-        authenticate(["restaurant", "admin"], "bearer"),
+        authenticate(["restaurant", "user"], "bearer"),
       ],
     },
   ],