Don’t care about the crypttab until the system is booted.
You have two ways:
- you specify a dracut kernel parameter for the device. These can override a bad crypttab entry.
- unlock and mount the device manually in the emergency shell. Then exit the shell.
With both the system should boot and you can adjust the crypttab and regenerate initramfs.
Please check the links in my last reply again. The dracut manual has a complete help example under “Accessing the root volume from the dracut shell”.