Update README.md

Author: uglide

README.md

@@ -29,6 +29,6 @@ Open source cross-platform Redis Desktop Manager based on Qt 5
 | [0.9.0-alpha1](https://github.com/uglide/RedisDesktopManager/milestone/8) | Sept 9, 2016 | [Sept 13, 2016](https://github.com/uglide/RedisDesktopManager/releases/tag/0.9.0-alpha1) |
 | [0.9.0-alpha2](https://github.com/uglide/RedisDesktopManager/milestone/8) | Oct 7, 2016 | [Oct 21, 2016](https://github.com/uglide/RedisDesktopManager/releases/tag/0.9.0-alpha2) |
 | [0.9.0-alpha3](https://github.com/uglide/RedisDesktopManager/milestone/27) | Oct 28, 2016 | [Nov 4, 2016](https://github.com/uglide/RedisDesktopManager/releases/tag/0.9.0-alpha3) |
-| [0.9.0-alpha4](https://github.com/uglide/RedisDesktopManager/milestone/30) | ~~Dec 23, 2016~~ Apr 7, 2017 | [Apr 28, 2017] (https://github.com/uglide/RedisDesktopManager/releases/tag/0.9.0-alpha4) |
+| [0.9.0-alpha4](https://github.com/uglide/RedisDesktopManager/milestone/30) | ~~Dec 23, 2016~~ Apr 7, 2017 | [Apr 28, 2017](https://github.com/uglide/RedisDesktopManager/releases/tag/0.9.0-alpha4) |
 | [0.9.0-beta](https://github.com/uglide/RedisDesktopManager/milestone/29) | ~~Jan 20, 2017~~ ~~Apr 28, 2017~~ | May 26, 2017 |
 | [0.9.0](https://github.com/uglide/RedisDesktopManager/milestone/8) | ~~Feb 17, 2017~~ ~~May 12, 2017~~ | Jul 30, 2017 |