docs: update links to PRO versions

Author: mrholek

README.md

@@ -48,6 +48,7 @@ CoreUI is meant to be the UX game changer. Pure & transparent code is devoid of
 
 * 💪  [CoreUI PRO Angular Admin Template](https://coreui.io/product/angular-dashboard-template/)
 * 💪  [CoreUI PRO Bootstrap Admin Template](https://coreui.io/product/bootstrap-dashboard-template/)
+* 💪  [CoreUI PRO Next.js Admin Template](https://coreui.io/product/next-js-dashboard-template/)
 * 💪  [CoreUI PRO React Admin Template](https://coreui.io/product/react-dashboard-template/)
 * 💪  [CoreUI PRO Vue Admin Template](https://coreui.io/product/vue-dashboard-template/)
 
@@ -57,9 +58,9 @@ CoreUI is meant to be the UX game changer. Pure & transparent code is devoid of
 | --- | --- |
 | [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_default_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=default) | [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_light_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=light)|
 
-| Default Theme v3 | Light Theme v3 |
+| Modern Theme | Bright Theme |
 | --- | --- |
-| [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_default_v3_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=default-v3) | [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_light_v3_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=light)|
+| [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_default_v3_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=modern) | [![CoreUI PRO React Admin Template](https://coreui.io/images/templates/coreui_pro_light_v3_light_dark.webp)](https://coreui.io/product/react-dashboard-template/?theme=bright)|
 
 ## Quick Start