dokuwiki: Fix acronym + remove TODO from README

Co-Authored-By: adb-sh <git@adb.sh>

README.md

@@ -7,8 +7,6 @@ NixOS configuration for the [chaos.jetzt] project. They are very much work in pr
 - [mumble-web](https://github.com/johni0702/mumble-web), possibly adding [mumble-web-proxy](https://github.com/johni0702/mumble-web-proxy/) on top
   - Both need to be packaged for Nix
 - [Dokuwiki](https://www.dokuwiki.org/dokuwiki)
-  - NixOS module exists: `services.dokuwiki`
-  - Data migration
   - Migrate away from SSO
 - [freescout-helpdesk](https://github.com/freescout-helpdesk)
   - @e1mo is already working on a nix package + NixOS module for their private nixfiles

services/dokuwiki.nix

@@ -73,7 +73,7 @@
     "SSO" = "Single Sign-on";
     "sso" = SSO;
     "CTFL" = "Chaostreff Flensburg e.V.";
-    "ctfl" = SSO;
+    "ctfl" = CTFL;
   };
 
   acronyms_file = pkgs.writeText "acronyms.local.conf" ''