docs: for PR #3913

ACKNOWLEDGEMENTS.md

@@ -1107,3 +1107,4 @@ Further device support has been made with the assistance of users. Please consid
 - [8none1](https://github.com/8none1) for contributing support for Pro Breeze D-23 dehumidifier.
 - [darchons](https://github.com/darchons) for contributing improvements to subdevice support.
 - [creoludifico](https://github.com/creoludifico) for contributing support for Nexsmart Watch 2, Air 2 and Air 3 cameras.
+- [PMKA](https://github.com/PMKA) for contributing support for Goldair GPOC2415 oil heater.

DEVICES.md

@@ -31,7 +31,7 @@
 - Eurom Sani heated towel rail
 - Eurom Sani Wall Heat 2000 and Wall Designheat 2000 heaters
 - Eurom Sani 400,600,800 heaters
-- Goldair GPPH, GCPV, GECO and PH-ET heaters
+- Goldair GPPH, GCPV, GECO, GPOC and PH-ET heaters
 - Hama radiator controller
 - Heatstorm DH-100-TWI, HS-1500 and HS-6000-GC heaters
 - Herschel Select XLS heated bathroom mirror with lights