@SloDriver as @macuser_22 stated, there are different tax charts for different purposes.
The chart you are looking at are for 'ordinary income' only. I suspect the sum of lines 3a (qualified dividends) and 7 (capital gains) are around $2200.
These two lines much be subtracted from $45,055 before looking up the tax in the table as these lines are taxed at the capital gains rate, which at your income level would by 0%.
your tax would be $5014 only if line 3a and 7 were zero. But you stated you sold stock, so that is not going to be the case. (I see the $5014 in the table)
