No, you do not have to submit the supplemental I485 form. There is a note on page 1 of the instructions for I485A that states if you are the spouse of a US citizen, and you entered legally on a VISA that was NOT C1 or S immgrant VISA, you do not have to file the supplement form.

http://www.uscis.gov/files/form/i-485supainstr.pdf