Documantation mislead

Hello Dear documenter
It seems you have forgotten to redress this part on lv_group.

Groups can be used to logically hold objects so that they can be individually focused. They are NOT for laying out objects on a screen (try lv_cont for that)

There is no lv_cont left in V8

Thanks for your contribution! I have created a pull request for an update of that part in the documentation.