nixos/version: PRETTY_NAME in /etc/os-release uses the release now instead of full version

to be more suitable for presentation to the user

nixos/doc/manual/release-notes/rl-2003.xml

@@ -236,6 +236,13 @@
      release announcement</link> for more information.
     </para>
    </listitem>
+   <listitem>
+     <para>
+       <literal>PRETTY_NAME</literal> in <literal>/etc/os-release</literal>
+       uses the release now instead of full version
+       to be more suitable for presentation to the user
+     </para>
+   </listitem>
   </itemizedlist>
  </section>
 </section>

nixos/modules/misc/version.nix

@@ -92,7 +92,7 @@ in
         VERSION="${cfg.version} (${cfg.codeName})"
         VERSION_CODENAME=${toLower cfg.codeName}
         VERSION_ID="${cfg.version}"
-        PRETTY_NAME="NixOS ${cfg.version} (${cfg.codeName})"
+        PRETTY_NAME="NixOS ${cfg.release} (${cfg.codeName})"
         LOGO="nix-snowflake"
         HOME_URL="https://nixos.org/"
         DOCUMENTATION_URL="https://nixos.org/nixos/manual/index.html"