Both answers below are correct. You need to contact your broker or agent to request these updates. They will then be able to log onto Trulia and make the necessary changes.
If the home you are selling is on MLS the Realtor or Broker you are working with would need to make those changes. The changes are then automatically reflected on other sites like Trulia, usually the next day.
If you have other questions and are not represented by a Realtor now feel free to contact me as I'm very familiar with Eagan.
RE/MAX Results - Apple Valley