message: docs: improve meta extending
diff: @@ -58,10 +58,14 @@ router.beforeEach((to, from) => {
  ## TypeScript
  -It is possible to type the meta field by extending the `RouteMeta` interface:
  +It is possible to type the meta field by extending the `RouteMeta` interface from `vue-router`:
  ```ts
  -// typings.d.ts or router.ts
  +// This can be directly added to any of your `.ts` files like `router.ts`
  +// It can also be added to a `.d.ts` file, in which case you will need to add an export
  +// to ensure it is treated as a module
  +export {}
  +
  import 'vue-router'
  declare module 'vue-router' {
  