message: chore: update doc url
diff: @@ -25,7 +25,7 @@ Node.js >= 8.0.0 required.
  ## Docs
  -> We are still preparing the document and you can visit [here](https://github.com/midwayjs/pandora/tree/next/docs/source/zh-cn) now.
  +> We are still preparing the document and you can visit [here](https://github.com/midwayjs/pandora/tree/master/docs/source/zh-cn) now.
  ## How to Contribute
  