Update RG Cube release link to v1.2

Author: TheGammaSqueeze

README.md

@@ -78,7 +78,7 @@ Enjoy the combination of performance, flexibility, and console-like UX that Gamm
 | Device                               | Release                                                                                  |
 |--------------------------------------|------------------------------------------------------------------------------------------|
 | Anbernic RG556                       | [GammaOS Next - Anbernic RG556 - v1.2](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.2.0-ANBERNICRG556)  |
-| Anbernic RG Cube                     | [GammaOS Next - Anbernic T820 - v1](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.0.0-T820) |
+| Anbernic RG Cube                     | [GammaOS Next - Anbernic RG Cube - v1.2](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.2.0-ANBERNICRGCUBE)  |
 | Anbernic RG406H                      | [GammaOS Next - Anbernic RG406H - v1.2](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.2.0-ANBERNIC406H)  |
 | Anbernic RG406V                      | [GammaOS Next - Anbernic RG406V - v1.2](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.2.0-ANBERNIC406V) |
 | Anbernic RG476H                      | [GammaOS Next - Anbernic RG476H - v1.2](https://github.com/TheGammaSqueeze/GammaOSNext/releases/tag/v.1.2.0-ANBERNICRG476H) |