update README of hetzner script

scripts/hetzner-dedicated-wipe-and-install-nixos.sh

@@ -1,5 +1,9 @@
 #!/usr/bin/env bash
 
+# Adepted from :
+# * https://mazzo.li/posts/hetzner-zfs.html
+# * https://nixos.wiki/wiki/Install_NixOS_on_Hetzner_Online
+
 # Installs NixOS on a Hetzner server, wiping the server.
 #
 # This is for a specific server configuration; adjust where needed.
@@ -53,7 +57,7 @@
 #   being able to login without any authentication.
 # * The script reboots at the end.
 # * does not use uefi (check if you can : efibootmgr)
-# Notes https://mazzo.li/posts/hetzner-zfs.html
+#
 
 # FIXME : change password
 MAIN_PASSWORD="YOLO"