Is it just me or does this not actually tell you how to reset our security questions
After you have setup a rescue e-mail, how do you reset your security questions?
Apple ID-OTHER, iOS 6.1.3
It's as described on that page, you will get an option to send reset info to it. But it's more likely that you've added an alternate email address to your account, which is a different address/setting - to add a rescue email address you need to answer 2 of your security questions.
See if the instructions on this user tip help you reset them : https://discussions.apple.com/docs/DOC-4551