nixos/matrix-continuwuity: update environmental variable

Change ``CONDUWUIT_CONFIG`` to ``CONTINUWUITY_CONFIG``

Changed files
+1 -1
nixos
modules
services
+1 -1
nixos/modules/services/matrix/continuwuity.nix
···
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
environment = lib.mkMerge [
-
{ CONDUWUIT_CONFIG = configFile; }
+
{ CONTINUWUITY_CONFIG = configFile; }
cfg.extraEnvironment
];
startLimitBurst = 5;