Corrects the duplicate that appeared
Line16 should be :
`@install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-hook" "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs" # Arch Linux only`
* Create a initramfs folder & configuration files
* create a initramfs folder
* create Arch Linux folder
* Add `HOOK/INSTALL` files to generate a custom initrafms for boot on read-only snapshot for Arch Linux.
* Add readme file to initramfs folder
* Makefile changes
* Add readme file
* Add readme file of initramfs-overlayfs
* Add HOOK/INSTALL files for Arch Linux
* Readme changes
* Updates the documentation to be able to boot on a read-only snapshot.
* Redesign readme again.
