Core 12.0 and older: typo in F2,F3,F4 boot menu

[nomadbyte]

There's a long standing typo in F2,F3,F4 boot menu: "seperated" must be changed to "separated".

The following files should be patched in the image (/boot/isolinux/f2, /boot/isolinux/f3, /boot/isolinux/f4)

NOTE: This typo has likely migrated across all Core flavors (dCore etc.).

[Juanito]

Typos corrected on the server - thanks

The changes will appear in the next isos