You don't need to change anything.
Your profile here may be created under your maiden name but you can add your married name to the "Current Name" box and you will be known by your married name on your profile.
Please be aware that Wikitree does not accept raw DNA uploads.
Wikitree only needs the details of your test - which company, the type of test and the kit number if relevant. Click the DNA link on the right of your profile, and follow the instructions.
Also if you have uploaded your DNA to GEDmatch then you can also add your GEDmatch ID number to your profile, as well.
Also your DNA cannot be propagated through the wikitree system while you have no ancestors. The sooner you start adding ancestors to your part of the tree, the better.