soulseekqt: fixed desktop file (#338405)

Changed files
+2 -1
pkgs
applications
networking
p2p
soulseekqt
+2 -1
pkgs/applications/networking/p2p/soulseekqt/default.nix
···
# fixup and install desktop file
desktop-file-install --dir $out/share/applications \
-
--set-key Exec --set-value $binary \
+
--set-key Exec --set-value SoulseekQt \
+
--set-key Terminal --set-value false \
--set-key Comment --set-value "${meta.description}" \
--set-key Categories --set-value Network ${appextracted}/default.desktop
mv $out/share/applications/default.desktop $out/share/applications/SoulseekQt.desktop