You don't have to correct that. The form 8453 is for electronic attachments and changing it does not impact your refund/tax bill. Form 1095-C is for information purposes and the IRS may ignore your 8453 attachment. If they don't and you will receive any correspondence form them, you will be able to explain that the attachment is in error but you have had health coverage all year.
You would only need to amend if the correction changes the amount of your refund/tax liability.
