fix .desktop file

scripts/tigeros-postinstall.desktop

@@ -3,5 +3,5 @@ Version=1.0
 Type=Application
 Name=TigerOS postinstall script
 Comment=First run post-install configurations
-Exec=gnome-terminal -e "sudo /usr/local/bin/postinstall" --window-with-profile="First Run"
-Terminal=true
+Exec=gnome-terminal -e "sudo /usr/local/bin/postinstall"
+Terminal=false