I'm afraid the answer below is not entirely correct. Only listings submitted to Trulia manually can be edited at this time and it doesn't seem that you've submitted your listings to us manually.
If you click on the link to see more photos and details for each of your listings, you will find the source that provides us with the listing information we display. Our information should match the information that is shown on that site and to change our display you'll need to make sure that site, and the data feed they send to us, shows the most up-to-date information. Once that information is updated, the display on Trulia should update automatically as well.