Change the grpc link on README

README.md

@@ -8,7 +8,7 @@ An industrial-grade RPC framework used throughout [Baidu](http://ir.baidu.com/ph
 
 You can use it to:
 * Build a server that can talk in multiple protocols (**on same port**), or access all sorts of services
-  * restful http/https, [h2](https://http2.github.io/http2-spec)/[grpc](https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md). using http/h2 in brpc is much more friendly than [libcurl](https://curl.haxx.se/libcurl/). Access protobuf-based protocols with HTTP/h2+json, probably from another language.
+  * restful http/https, [h2](https://http2.github.io/http2-spec)/[grpc](https://grpc.io). using http/h2 in brpc is much more friendly than [libcurl](https://curl.haxx.se/libcurl/). Access protobuf-based protocols with HTTP/h2+json, probably from another language.
   * [redis](docs/en/redis_client.md) and [memcached](docs/en/memcache_client.md), thread-safe, more friendly and performant than the official clients.
   * [rtmp](https://github.com/brpc/brpc/blob/master/src/brpc/rtmp.h)/[flv](https://en.wikipedia.org/wiki/Flash_Video)/[hls](https://en.wikipedia.org/wiki/HTTP_Live_Streaming), for building [streaming services](https://github.com/brpc/media-server).
   * hadoop_rpc (may be opensourced)

README_cn.md

@@ -9,7 +9,7 @@
 你可以使用它：
 
 * 搭建能在**一个端口**支持多协议的服务, 或访问各种服务
-  * restful http/https, [h2](https://http2.github.io/http2-spec)/[grpc](https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md)。使用brpc的http实现比[libcurl](https://curl.haxx.se/libcurl/)方便多了。从其他语言通过HTTP/h2+json访问基于protobuf的协议.
+  * restful http/https, [h2](https://http2.github.io/http2-spec)/[grpc](https://grpc.io)。使用brpc的http实现比[libcurl](https://curl.haxx.se/libcurl/)方便多了。从其他语言通过HTTP/h2+json访问基于protobuf的协议.
   * [redis](docs/cn/redis_client.md)和[memcached](docs/cn/memcache_client.md), 线程安全，比官方client更方便。
   * [rtmp](https://github.com/brpc/brpc/blob/master/src/brpc/rtmp.h)/[flv](https://en.wikipedia.org/wiki/Flash_Video)/[hls](https://en.wikipedia.org/wiki/HTTP_Live_Streaming), 可用于搭建[流媒体服务](https://github.com/brpc/media-server).
   * hadoop_rpc(可能开源)