Fix changelog for v2.0.2

Author: Ibrahim Jarif

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Serialization Versioning](VERSIONING.md).
 
-## [2.0.2-rc1] - 2020-02-26
+## [2.0.2] - 2020-02-26
 
 ### Fixed
 
@@ -293,7 +293,7 @@ Bug fix:
 ## [1.0.1] - 2017-11-06
 * Fix an uint16 overflow when resizing key slice
 
-[2.0.2-rc1]: https://github.com/dgraph-io/badger/compare/v2.0.1...v2.0.2-rc1
+[2.0.2]: https://github.com/dgraph-io/badger/compare/v2.0.1...v2.0.2
 [2.0.1]: https://github.com/dgraph-io/badger/compare/v2.0.0...v2.0.1
 [2.0.0]: https://github.com/dgraph-io/badger/compare/v1.6.0...v2.0.0
 [1.6.0]: https://github.com/dgraph-io/badger/compare/v1.5.5...v1.6.0