Employment Based Greencard

I think I made a mistake on one of the yes/no questions my I-485. To the question "have you ever been arrested, cited, charged, indicted, convicted, fined, or imprisoned for breaking or violating any law or ordinance," I answered "No" because I had not been arrested, cited, charged, indicted, convicted, fined, or imprisoned, but I came to remember that years ago I had been "ticketed" and possibly charged for selling liquor without a license. (I used to own a restaurant and my server served liquor to an undercover police officer.) I always remembered it as my server's fault and thought it was a non-issue. In addition, the whole incident was caused by a misunderstanding (*I did have my liquor license*) and the case was dismissed very early on (I did not have to pay fines or anything). I had a meeting with the DA before I was scheduled to appear in court, and they told me that they would dismiss the case, which they did.

How can I correct this mistake? Can I correct it at the interview by bringing additional supporting evidence and laying them on the table? My interview is only one week away. I have already obtained my certified court record to show that the case was closed at management conference and dismissed. I can't sleep because of this. I would greatly appreciate your advice in this matter. Please. Anyone?