Merge pull request #146937 from amarshall/pam-apparmor-fix

nixos/pam: Fix apparmor syntax error

nixos/modules/security/pam.nix

@@ -1072,8 +1072,8 @@ in
     security.apparmor.includes."abstractions/pam" = let
       isEnabled = test: fold or false (map test (attrValues config.security.pam.services));
       in
-      lib.concatMapStringsSep "\n"
-        (name: "r ${config.environment.etc."pam.d/${name}".source},")
+      lib.concatMapStrings
+        (name: "r ${config.environment.etc."pam.d/${name}".source},\n")
         (attrNames config.security.pam.services) +
       ''
       mr ${getLib pkgs.pam}/lib/security/pam_filter/*,