update changelog

Signed-off-by: Brian L. Troutwine <brian.troutwine@datadoghq.com>

Author: blt

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](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.30.0-rc0]
+## [0.30.0]
 ## Added
 - Lading now supports configuration directories. If the config path is
   discovered to be a directory lading will merge all .yaml files in that