docz:docz相关问题汇总

- [ ] 在手机端切换文档之后，页面不能滚动了。相关issue及合并请求：[issue#870](https://github.com/pedronauck/docz/issues/870),[pull request #880](https://github.com/pedronauck/docz/pull/880)

- [ ] 打开带有hash的url,页面不能定位到准确位置。[issue #908](https://github.com/pedronauck/docz/issues/908)  [issue #763](https://github.com/pedronauck/docz/issues/763)

- [ ] docz性能问题