William Brock told investigators he shot Loletha Hall because he thought she was working with a man who called and threatened him and his family. Hall did not threaten Brock and did not have a weapon or assault him, according to the sheriff’s office and court documents.
So yes a typo. The typo they are referring to isn’t the amount. It’s the fact that the article says the fine can stand in place of the prison sentence. Your link specifies the fine is “In addition” which means they get jail AND a fine.