docs: for PR #3909

ACKNOWLEDGEMENTS.md

@@ -655,7 +655,7 @@ Further device support has been made with the assistance of users. Please consid
 - [blackice013](https://github.com/blackice013) for contributing support for Hunter Pacific 9 speed fan with light.
 - [Stalex25](https://github.com/Stalex25) for assisting with support for Vaco Moby Blue and Arrifana portable heatpumps.
 - [flocke](https://github.com/flocke) for assisting with support for MeacoDry Arete Two dehumidifier.
-- [FredrikM97](https://github.com/FredrikM97) for assisting with and contributing improvements to Cleverio PF100, Honeyguardian S56 and many other pet feeders, and improvements to the development environment.
+- [FredrikM97](https://github.com/FredrikM97) for assisting with and contributing improvements to Cleverio PF100, Honeyguardian S56 and many other pet feeders, Catit Pixi pet fountain and improvements to the development environment.
 - [chadtheriault](https://github.com/chadtheriault) for assisting with Zemismart AM25 roller blinds.
 - [fmonday](https://github.com/fmonday) for assisting with Enlighten Café string lights.
 - [plopezllorca](https://github.com/plopezllorca) for assisting with support for Lefant T700 vacuum.