Using such a word doesn’t warrant anything except for an immediate ban. This is common etiquette.
Be aware that any more uses of the N-word (accidental or not) will result in another ban and void your possibility of another ban appeal.
Can you read the rules and quote the rule(s) you broke? Do this in a new reply, don’t edit your appeal. If you do not know how to quote the rules, read the guide How to quote the rules.
If you do not identify the right rule(s) that you broke or you do not know which ones you broke, I can make it clear.