nixos: update release notes for unifi-poller --> unpoller.

nixos/doc/manual/from_md/release-notes/rl-2305.section.xml

@@ -139,6 +139,13 @@
           the Nix store.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          The <literal>unifi-poller</literal> package and corresponding
+          NixOS module have been renamed to <literal>unpoller</literal>
+          to match upstream.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
 </section>

nixos/doc/manual/release-notes/rl-2305.section.md

@@ -44,3 +44,5 @@ In addition to numerous new and upgraded packages, this release has the followin
 - A new `virtualisation.rosetta` module was added to allow running `x86_64` binaries through [Rosetta](https://developer.apple.com/documentation/apple-silicon/about-the-rosetta-translation-environment) inside virtualised NixOS guests on Apple silicon. This feature works by default with the [UTM](https://docs.getutm.app/) virtualisation [package](https://search.nixos.org/packages?channel=unstable&show=utm&from=0&size=1&sort=relevance&type=packages&query=utm).
 
 - Resilio sync secret keys can now be provided using a secrets file at runtime, preventing these secrets from ending up in the Nix store.
+
+- The `unifi-poller` package and corresponding NixOS module have been renamed to `unpoller` to match upstream.