docs: for PR #4143

ACKNOWLEDGEMENTS.md

@@ -1167,3 +1167,4 @@ Further device support has been made with the assistance of users. Please consid
 - [HW-YUN](https://github.com/HW-YUN) for contributing support for Smartmi Air Circulating fan.
 - [flemmingkok](https://github.com/flemmingkok) for assisting with support for InTec ceiling fan with light.
 - [rsbelo](https://github.com/rsbelo) for contributing support for HTW HTWD020A4 dehumidifier.
+- [UksusoFF](https://github.com/UksusoFF) for contributing support for Zeissler ZSw.1312 water leak detector.

DEVICES.md

@@ -1178,6 +1178,7 @@ port and password.
 - Yieryi water quality monitor (also matches unbranded PH-W3988 device)
 - Yinmik WF-3188 water quality monitor
 - Zecamin ZG-205W mmWave human presence sensor
+- Zeissler ZSw.1312 water leak detector
 - ZMP71SH variable speed swimming pool pump
 - ZN-2C09 9-in-1 air quality monitor
 - ZX-GS21 gas leak alarm monitor