Update CHANGELOG.md

Author: bouwew

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 # v0.16.9 - Smile: bugfix and improve
 - Fix for https://github.com/plugwise/plugwise-beta/issues/250
-- Rename heatpump outdoor_temperature sensor to outdoor_unit_temperature sensor
+- Rename heatpump outdoor_temperature sensor to outdoor_air_temperature sensor
 
 # v0.16.8 - Smile: bugfixes, continued
 - Fix for https://github.com/home-assistant/core/issues/68003