Merge pull request #265061 from Janik-Haag/woodpecker

nixos/woodpecker-server: fix environmentFile example

nixos/modules/services/continuous-integration/woodpecker/server.nix

···
       environmentFile = lib.mkOption {
         type = with lib.types; coercedTo path (f: [ f ]) (listOf path);
         default = [ ];
-        example = "/root/woodpecker-server.env";
+        example = [ "/root/woodpecker-server.env" ];
         description = lib.mdDoc ''
           File to load environment variables
           from. This is helpful for specifying secrets.