Added comment polish translation to desktop file

src/Icons/qBittorrent.desktop

@@ -1,6 +1,5 @@
 [Desktop Entry]
 Categories=Network;FileTransfer;P2P;Qt;
-Comment=Download and share files over BitTorrent
 Exec=qbittorrent %U
 GenericName=BitTorrent client
 GenericName[ar]=العميل BitTorrent
@@ -30,6 +29,8 @@ GenericName[tr]=BitTorrent istemcisi
 GenericName[uk]=BitTorrent-клієнт
 GenericName[zh]=BitTorrent之用户
 GenericName[zh_TW]=BitTorrent客戶端
+Comment=Download and share files over BitTorrent
+Comment[pl]=Dzielenie się plikami przez BitTorrent
 Icon=qbittorrent
 MimeType=application/x-bittorrent;x-scheme-handler/magnet;
 Name=qBittorrent