docs: for PR #3653

ACKNOWLEDGEMENTS.md

@@ -1025,3 +1025,4 @@ Further device support has been made with the assistance of users. Please consid
 - [tobias-b-gmx](https://github.com/tobias-b-gmx) for assisting with support for Dewin KWS-306WF energy monitoring circuit breaker, Sichler ZX-7655 heater.
 - [chrkov](https://github.com/chrkov) for assisting with support for Revesien Q-Pro-W aroma diffuser.
 - [lilYozik](https://github.com/lilYozik) for assisting with support for Eberg Fyn tower fan.
+- [malkavi](https://github.com/malkavi) for contributing support for Cecotec Conga 1970 robot vacuum.

DEVICES.md

@@ -794,6 +794,7 @@ of device.
 
 - Abir X8 vacuum cleaner
 - Airrobo P20 vacuum cleaner
+- Cecotec Conga 1970 vacuum cleaner
 - iHome Autoac Nova vacuum cleaner
 - Kabum Smart 500, 700 vacuum cleaners
 - Kogan LX10, LX15, LX8 vacuum cleaners