Update README and fix dead link.
@@ -185,7 +185,7 @@ To get other components ([TiDB](https://github.com/pingcap/tidb) and [PD](https:
### Configuration
-Read our configuration guide to learn about various [configuration options](https://github.com/tikv/tikv/tree/master/docs/op-guide).
+Read our configuration guide to learn about various [configuration options](./docs/reference/configuration). Also, here is a [configuration template](./etc/config-template.toml).
## Contributing
