Update README.md (#51)

README.md

@@ -7,7 +7,7 @@ TiDB is a distributed SQL database. Inspired by the design of Google F1, TiDB su
 
 ## Building TiDB
 
- - [Supported platform](dev-guide/requirements.md#supported-platforms)
+ - [Supported platforms](dev-guide/requirements.md#supported-platforms)
  - [Prerequisites](dev-guide/requirements.md#prerequisites)
  - [For Deployment](dev-guide/deployment.md)
  - [For Development](dev-guide/development.md)
@@ -17,4 +17,4 @@ TiDB is a distributed SQL database. Inspired by the design of Google F1, TiDB su
  - [Configuration](op-guide/configuration.md)
  - [Setting up clusters](op-guide/clustering.md)
  - [Running the TiDB clusters inside containers](op-guide/docker.md)
- - [Getting the TiDB clusters status from the Placement Driver (PD)](https://cdn.rawgit.com/pingcap/docs/master/op-guide/pd-api-v1.html)
+ - [Getting the TiDB clusters status from the Placement Driver (PD)](https://cdn.rawgit.com/pingcap/docs/master/op-guide/pd-api-v1.html)