nixos containers: remove stray `,` from pattern

See #31888.

Changed files
+1 -1
nixos
modules
virtualisation
+1 -1
nixos/modules/virtualisation/containers.nix
···
services.udev.extraRules = optionalString config.networking.networkmanager.enable ''
# Don't manage interfaces created by nixos-container.
-
ENV{INTERFACE}=="v[e,b]-*", ENV{NM_UNMANAGED}="1"
+
ENV{INTERFACE}=="v[eb]-*", ENV{NM_UNMANAGED}="1"
'';
environment.systemPackages = [ pkgs.nixos-container ];