docs: for PR #3891

ACKNOWLEDGEMENTS.md

@@ -1094,3 +1094,4 @@ Further device support has been made with the assistance of users. Please consid
 - [luckyTamme](https://github.com/luckyTamme) for contributing support for Smart P01 smartplug.
 - [justinwyq](https://github.com/justinwyq) for contributing support for Outdoor Inc zip blind.
 - [tr1ckz](https://github.com/tr1ckz) for contributing support for Vivo FD55 TV mount.
+- [smeegoan](https://github.com/smeegoan) for contributing support for GoSund SP211 power monitoring dual smartplug.

DEVICES.md

@@ -611,7 +611,8 @@ the best option.
 - ES01 3 outlet + USB powerstrip with individual timers
 - ESP Fort EC-SPSP USB and mains smartplug
 - Gosund P1 3 outlet + USB powerstrip with power monitoring
-- Gosund SP112-RTL energy monitoring smartplug with USB
+- Gosund SP112-RTL power monitoring smartplug with USB
+- Gosund SP211 power monitoring dual smartplug
 - Gosund WP9-RTL 3 outlet + USB powerstrip with child lock and initial state
 - Grid Connect double outlet wall socket
 - Grid Connect double outlet with Energy Monitoring, Master and Individual switches and Child Lock