Fixed changelog (#3789)

Indention was wrong

CHANGELOG.md

@@ -6,7 +6,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 ### Changed
- - Updated AdminLTE theme to version 2.3.3
+- Updated AdminLTE theme to version 2.3.3
 
 ## [3.0.0](https://github.com/sonata-project/SonataAdminBundle/compare/2.3.10...3.0.0) - 2016-05-08
 ### Added