Documentation request: Vue testing library with Pinia

The examples page for Vue Testing Library (https://testing-library.com/docs/vue-testing-library/examples/#more-examples) contains links to [an example that implements vuex](https://github.com/testing-library/vue-testing-library/blob/main/src/__tests__/vuex.js). However this example is somewhat outdated: [vuex's website](https://github.com/testing-library/vue-testing-library/blob/main/src/__tests__/vuex.js) says that “Pinia is now the new default”. [The examples folder](https://github.com/testing-library/vue-testing-library/tree/main/src/__tests__) has no tests referencing Pinia. The examples should preferably update to reference Pinia.