chore(release): fix changelog

Author: liamross

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
-### [0.2.1](https://github.com/PDFTron/webviewer-react-toolkit/compare/v0.2.0...v0.2.1) (2020-02-26)
+## [0.2.1](https://github.com/PDFTron/webviewer-react-toolkit/compare/v0.2.0...v0.2.1) (2020-02-26)
 
 ### Features