Update black_jack_test.py

When the Ace is part of the opening hand, it’s value should return 11, not 1.

You can see my additions here:

gh pr checkout 3318

What do you mean by «opening hand»? Is this a concept already present in the problem specification?

The exercise is not asking the value of the ace which is already in the hand. It asks, assuming an existing hand, what is the value of an additional ace.

Your function will have to decide if the upcoming ace will get a value of 1 or a value of 11