Update changelog. [ci skip]

Author: Abscissa

CHANGELOG.md

@@ -3,7 +3,7 @@ v2.3.0 - TBD
 
 - **Tests:** [#186](https://github.com/mysql-d/mysql-native/issues/186):
 	Fix metadata tests on MariaDB 10.2 and 10.3
-- **Internal:** Rework travis config and scripts, including:
+- **Tests:** Rework travis config and scripts, including:
 	- General cleanup.
 	- Convert test scripts from bash/batch to D.
 	- Testing on more versions of MariaDB server.