Update README.md

Author: StuartIanNaylor

README.md

@@ -10,7 +10,7 @@ lower mount in the OverlayFS.
 https://github.com/kmxz/overlayfs-tools should be a git clone operation and forgot to add to .gitignore, but
 many thanks to kmxz for the overlay merge tool.
 
-Zram-config also allows a 'kiosk mode' where `sudo zram-config enable-ephemeral` on reboot will load the whole root into zram. There is no sync and zdir/zlog entries will be ignored as already included. `sudo zram-config disable-ephemeral` and reboot to return to a normal system. https://blockdev.io/read-only-rpi/ and thanks to the original sources for another great script.
+Zram-config also allows a 'kiosk mode' where `sudo zram-config enable-ephemeral` on reboot will load the whole root into zram. There is no sync and zdir/zlog entries will be ignored as already included via the whole ro-root and zram upper. `sudo zram-config disable-ephemeral` and reboot to return to a normal system. https://blockdev.io/read-only-rpi/ and thanks to the original sources for another great script.
 
 
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