SIG has changed Bluetooth mesh to Bluetooth Mesh
Updating zephyr docs accordingly
Leaving out old release notes
Signed-off-by: Mia Koen <mia.koen@nordicsemi.no>
According to https://github.com/zephyrproject-rtos/zephyr/pull/61886#issuecomment-1713302331
we need to use "must only" for models that spec states:
`If supported, ... shall be supported by the primary element and shall
not be supported by any secondary element`.
Signed-off-by: Pavel Vasilyev <pavel.vasilyev@nordicsemi.no>