nixos/doc/rl-2205: add slapd argon2 module rename hint

nixos/doc/manual/from_md/release-notes/rl-2205.section.xml

@@ -801,6 +801,13 @@
           <literal>services.openldap.settings</literal>, which
           represents your <literal>cn=config</literal>.
         </para>
+        <para>
+          Additionally with 2.5 the argon2 module was included in the
+          standard distrubtion and renamed from
+          <literal>pw-argon2</literal> to <literal>argon2</literal>.
+          Remember to update your <literal>olcModuleLoad</literal> entry
+          in <literal>cn=config</literal>.
+        </para>
       </listitem>
       <listitem>
         <para>

nixos/doc/manual/release-notes/rl-2205.section.md

@@ -270,6 +270,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - `openldap` (and therefore the slapd LDAP server) were updated to version 2.6.2. The project introduced backwards-incompatible changes, namely the removal of the bdb, hdb, ndb, and shell backends in slapd. Therefore before updating, dump your database `slapcat -n 1` in LDIF format, and reimport it after updating your `services.openldap.settings`, which represents your `cn=config`.
 
+  Additionally with 2.5 the argon2 module was included in the standard distrubtion and renamed from `pw-argon2` to `argon2`. Remember to update your `olcModuleLoad` entry in `cn=config`.
+
 - `openssh` has been update to 8.9p1, changing the FIDO security key middleware interface.
 
 - `git` no longer hardcodes the path to openssh' ssh binary to reduce the amount of rebuilds. If you are using git with ssh remotes and do not have a ssh binary in your enviroment consider adding `openssh` to it or switching to `gitFull`.