doc/release-notes: RFC 42 -> freeform options

"Freeform options" is a term that's a bit more meaningful to regular
users who don't follow development, and thus does a better job at
describing the changes

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -524,7 +524,7 @@
 
 - The `replay-sorcery` package and module was removed as it unmaintained upstream. Consider using `gpu-screen-recorder` or `obs-studio` instead.
 
-- To follow [RFC 0042](https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md) a few options of `samba` have been moved from `extraConfig` and `configText` to the new freeform option `settings` and renamed, e.g.:
+- A few options of `services.samba` have been moved from `extraConfig` and `configText` to the new freeform option `settings` and renamed, e.g.:
   - `services.samba.invalidUsers` to `services.samba.settings.global."invalid users"`
   - `services.samba.securityType` to `services.samba.settings.global."security type"`
   - `services.samba.shares` to `services.samba.settings`
@@ -757,7 +757,7 @@
 - The `i18n.inputMethod` module introduces two new properties:
   `enable` and `type`, for declaring whether to enable an alternative input method and defining which input method respectfully. The options available in `type` are the same as the existing `enabled` option. `enabled` is now deprecated, and will be removed in a future release.
 
-- `security.pam.u2f` now follows RFC42; all module options are now configurable through `security.pam.u2f.settings`.
+- `security.pam.u2f` now uses freeform options; all module options are now configurable through `security.pam.u2f.settings`.
 
 - `mikutter` was removed as the package was broken and had no maintainers.