docs: for PR #4508

ACKNOWLEDGEMENTS.md

@@ -1260,3 +1260,4 @@ Further device support has been made with the assistance of users. Please consid
 - [Derek6711](https://github.com/Derek6711) for assisting with support for Yakry camera pet feeder.
 - [tarasifua](https://github.com/tarasifua) for contributing support for MyCond Berg air conditioner.
 - [AdamTReineke](https://github.com/AdamTReineke) for assisting with support for Inkbird IAQM-129-W air quality monitor.
+- [King2zzo](https://github.com/King2zzo) for contributing support for Hokkaido air conditioner.

DEVICES.md

@@ -120,6 +120,7 @@ devices # Supported
 - Fujicool Yuzu heat pump
 - Goldair GCPAC350W portable air conditioner
 - Haier Airmart wall air conditioner
+- Hokkaido HKEDM 263 ZL air conditioner
 - Idea Heating Belt (with CS1 USB dongle)
 - Igenix IG9901WIFI portable air conditioner
 - Inventor Comfort and Leon air conditioners