Listings are sent to Trulia through a variety of feed sources such as partners, brokers, agents, third-party feed providers, or directly from an MLS. Edits to your listing on Trulia will need to be updated at the source of the listing. Since I do not have the address of your listing I am not certain where it is syndicating to Trulia from.
If your listing was posted on Trulia through Zillow Rental Manager, which is a partner site that syndicates listings to Trulia and other websites. Please log in to your Zillow Rental Manager account and click on the desired listing to update the information on the appropriate tab. After updating the information, scroll to the bottom of the screen and click on the Save & Continue button.
Your listing will update on Trulia within 24 hours once you edit it on Zillow.
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Consumer Care Manager