Update changelog

Author: moradology

CHANGES.md

@@ -10,6 +10,7 @@
 
 ### Fixed
 
+* Content-type response headers for the /search endpoint now reflect the geojson response expected in the STAC api spec ([#220](https://github.com/stac-utils/stac-fastapi/issues/220)
 * Links stored with Collections and Items (e.g. license links) are now returned with those STAC objects ([#282](https://github.com/stac-utils/stac-fastapi/pull/282))
 
 ## [2.2.0]