Maryland capital gains deduction

I am working on my 2020 Maryland state taxes, and I have arrived at the page labeled "Capital Gains on U.S. Obligations are Tax Free".  There are two boxes on this page, one lists the federal total capital gains and the other (blank) for Total From U.S. Obligations.  Reading the associated Turbotax help page and the Maryland bulletin, I am unclear on what gets entered here.

 

From the Maryland bulletin, the dividends and capital gains from U.S. obligations are deductible although the page only indicates capital gains.  Is that an error?