release-notes: state that PolyMC has been replaced

nixos/doc/manual/from_md/release-notes/rl-2211.section.xml

@@ -38,6 +38,24 @@
           <literal>stdenv.buildPlatform.canExecute stdenv.hostPlatform</literal>.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          The <literal>polymc</literal> package has been removed due to
+          a rogue maintainer. It has been replaced by
+          <literal>prismlauncher</literal>, a fork by the rest of the
+          maintainers. For more details, see
+          <link xlink:href="https://github.com/NixOS/nixpkgs/pull/196624">the
+          pull request that made this change</link> and
+          <link xlink:href="https://github.com/NixOS/nixpkgs/issues/196460">this
+          issue detailing the vulnerability</link>. Users with existing
+          installations should rename
+          <literal>~/.local/share/polymc</literal> to
+          <literal>~/.local/share/PrismLauncher</literal>. The main
+          config file’s path has also moved from
+          <literal>~/.local/share/polymc/polymc.cfg</literal> to
+          <literal>~/.local/share/PrismLauncher/prismlauncher.cfg</literal>.
+        </para>
+      </listitem>
       <listitem>
         <para>
           The <literal>nixpkgs.hostPlatform</literal> and

nixos/doc/manual/release-notes/rl-2211.section.md

@@ -20,6 +20,16 @@ In addition to numerous new and upgraded packages, this release has the followin
   built for `stdenv.hostPlatform` (i.e. produced by `stdenv.cc`) by evaluating
   `stdenv.buildPlatform.canExecute stdenv.hostPlatform`.
 
+- The `polymc` package has been removed due to a rogue maintainer. It has been
+  replaced by `prismlauncher`, a fork by the rest of the maintainers. For more
+  details, see [the pull request that made this
+  change](https://github.com/NixOS/nixpkgs/pull/196624) and [this issue
+  detailing the vulnerability](https://github.com/NixOS/nixpkgs/issues/196460).
+  Users with existing installations should rename `~/.local/share/polymc` to
+  `~/.local/share/PrismLauncher`. The main config file's path has also moved
+  from `~/.local/share/polymc/polymc.cfg` to
+  `~/.local/share/PrismLauncher/prismlauncher.cfg`.
+
 - The `nixpkgs.hostPlatform` and `nixpkgs.buildPlatform` options have been added.
   These cover and override the `nixpkgs.{system,localSystem,crossSystem}` options.