Merge branch 'master' of https://github.com/alibaba/dubbo

Author: chickenlj

README.md

@@ -15,7 +15,7 @@ We are now collecting dubbo user info in order to help us to improve dubbo bette
 * [Side projects](http://github.com/dubbo)
     * [Dubbo Spring Boot](https://github.com/dubbo/dubbo-spring-boot-project) - Spring Boot Project for Dubbo.
     * [Dubbo ops](https://github.com/dubbo/dubbo-ops) - The reference implementation for dubbo ops(dubbo-admin,dubbo-monitor-simple,dubbo-registry-simple,etc.).
-* [Developer Mailing list](https://github.com/alibaba/dubbo/issues/1393) - Any questions or suggestions? Subscribe to (dev@dubbo.incubator.apache.org) to discuss with us.
+* [Developer Mailing list](https://github.com/alibaba/dubbo/issues/1393) - Any questions or suggestions? [Subscribe](https://github.com/alibaba/dubbo/issues/1393) to (dev@dubbo.incubator.apache.org) to discuss with us.
 * [Gitter channel](https://gitter.im/alibaba/dubbo) - Online chat room with Dubbo developers.
 * [Dubbo user manual(English)](http://dubbo.io/books/dubbo-user-book-en/) or [Dubbo用户手册(中文)](http://dubbo.io/books/dubbo-user-book/) - Describe how to use Dubbo and all features of Dubbo concretely.
 * [Dubbo developer guide(English)](http://dubbo.io/books/dubbo-dev-book-en/) or [Dubbo开发手册(中文)](http://dubbo.io/books/dubbo-dev-book/) - Detailly introduce the design principal, extension mechanisms, code conventions, version control and building project, etc.