Need to be able to edit the "Idea Created" message that appears in portal upon submitting

The use case is that the customer has an ideas workflow where all submitted ideas need to go through a review process before they are actually published to the portal via the visibility settings. What currently displays on the screen upon submitting an idea is "Idea Created" is displayed at the top of the screen. The request is to be able to modify this message like all the other terminology so that it can instead be updated to read "Thanks for submitting your idea. It will be reviewed by our team before it's published here.”

Without this, what is happening is people are submitting the same idea multiple times because they don't see it after creating it and aren't sure why.