The line you added into inittab is missing a :
at the end.
Add the following line to your inittab (and remove the current line):
In addition to this; take note of the following:
1. Red Hat 8 is a very old distro - which you should consider upgrading.
2. When you make changes to key configuration files (for example, inittab, grub.conf, fstab and so forth) consider backing up your original file; so that if you break your install; its possible to recover.