Minor change to changelog section name for clarity

Author: brews

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
 ## [Unreleased]
-### Fixed
+### Changed
 - Quiet unused(?), common, logging messages to terminal. ([PR #14](https://github.com/ClimateImpactLab/dscim/pull/14), [@brews](https://github.com/brews))
 
 ## [0.1.0] - 2022-08-30