message: docs: add note about encoding
diff: </router-view>
  ```
  See more on the [KeepAlive](https://github.com/vuejs/vue-router-next/blob/master/e2e/keep-alive/index.ts) and the [Transition](https://github.com/vuejs/vue-router-next/blob/master/e2e/transitions/index.ts) examples.
  +- Encoding is now more consistent. The initial navigation should yield the same results are in-app navigations.
  + - Values in `path`, `fullPath` are not decoded anymore. They will appear as provided by the browser (most browsers provide them encoded).
  + - `params`, `query` and `hash` are now all decoded
  + - When using `push`, `resolve` and `replace` and providing a `string` location or a `path` property in an object, **it must be encoded**. `params`, `query` and `hash` must be provided in its decoded version.
  ### Typings
  