Virtualbox: Fix type error in `networking.interfaces.vboxnet0.ipv4.addresses`

This error introduced in e239c1e5820bdbb3d94ccc46e2d6756b0d37057d
prevented evaluation on my machine.

Changed files
+1 -1
nixos
modules
virtualisation
+1 -1
nixos/modules/virtualisation/virtualbox-host.nix
···
'';
};
-
networking.interfaces.vboxnet0.ipv4.addresses = { address = "192.168.56.1"; prefixLength = 24; };
+
networking.interfaces.vboxnet0.ipv4.addresses = [{ address = "192.168.56.1"; prefixLength = 24; }];
# Make sure NetworkManager won't assume this interface being up
# means we have internet access.
networking.networkmanager.unmanaged = ["vboxnet0"];