spreaded if for more readability

unattended.sh

@@ -2,7 +2,9 @@
 
 xorriso -osirrox on -indev debian-11.3.0-amd64-netinst.iso -extract / isofiles
 sudo sed -i '/vesamenu.c32/d' isofiles/isolinux/isolinux.cfg
-if [[ $(grep timeout_style isofiles/boot/grub/grub.cfg) == "" ]]; then sudo sed -i 's/insmod play/set timeout_style=hidden\nset timeout=0\nset default=1\n\ninsmod play/' isofiles/boot/grub/grub.cfg; fi
+if [[ $(grep timeout_style isofiles/boot/grub/grub.cfg) == "" ]]; then
+  sudo sed -i 's/insmod play/set timeout_style=hidden\nset timeout=0\nset default=1\n\ninsmod play/' isofiles/boot/grub/grub.cfg;
+fi
 
 chmod +w -R isofiles/install.amd/
 gunzip isofiles/install.amd/initrd.gz