message: docs: change playground
diff: <script lang="ts">
  import { defineComponent, inject, computed } from 'vue'
  import { scrollWaiter } from './scrollWaiter'
  -import { routeKey, routerKey } from '../src'
  +import { useRoute } from '../src'
  export default defineComponent({
  name: 'App',
  setup() {
  - const router = inject(routerKey)!
  - const route = inject(routeKey)!
  - const a = inject('idk')
  + const route = useRoute()
  const state = inject('state')
  const currentLocation = computed(() => {
  @@ -144,8 +142,6 @@ export default defineComponent({
  state,
  flushWaiter,
  setupWaiter,
  - router,
  - a,
  }
  },
  })
  