docs: update stale workaround comments

- wechat.nix: repacking is needed because nixpkgs' wechat package does not expose its AppImage wrapper args for `.override`, not because wrapAppImage lacks overriding (it forwards args to buildFHSEnv).
- peripherals.nix: drop a link to an already-closed issue and fix a typo.

hardening/bwraps/wechat.nix

@@ -4,7 +4,9 @@
 #   - https://docs.flatpak.org/en/latest/manifests.html
 #   - https://docs.flatpak.org/en/latest/sandbox-permissions.html
 #
-# TODO Since appimageTools.wrapAppImage do not support overriding, I have to pack this package myself.
+# TODO nixpkgs' `wechat` package hardcodes its AppImage wrapper args and does not
+# expose them for `.override`, so we repack it here to add our bubblewrap sandbox
+# (bind mounts, tmpfs /home, IME env).  Upstream override support:
 # https://github.com/NixOS/nixpkgs/pull/358977
 {
   appimageTools,

modules/nixos/desktop/peripherals.nix

@@ -53,7 +53,7 @@
     udev.packages = with pkgs; [
       gnome-settings-daemon
       # platformio # udev rules for platformio
-      # openocd # required by paltformio, see https://github.com/NixOS/nixpkgs/issues/224895
+      # openocd # platformio needs these udev rules for rootless USB access
       # openfpgaloader
     ];