From what I remember, adding DNA testing information to Wikitree is pretty straightforward.
From your Wikitree profile, go to the top right of the page and click on Add and select the "DNA Test Information" button, and then select "Add a Test". You then select "Ancestry DNA" and put in as much information as you want. I recommend putting in your Ancestry DNA username and your Gedmatch # for your test in this entry, since the test connected to your Gedmatch # is the data from your Ancestry DNA test.
Then - just do the same for your husband (starting from his Wikitree profile) if you want to add his DNA information to Wikitree as well.