fix(types): correct nuxtConfig types

Author: davidstackio

src/runtime/composables/nuxtify.ts

@@ -1,3 +1,6 @@
+// Types
+import type { ModuleOptions } from '../types'
+
 import { useAppConfig } from '#app'
 
-export const useNuxtifyConfig = () => useAppConfig().nuxtify
+export const useNuxtifyConfig = (): ModuleOptions => useAppConfig().nuxtify