Make it clear what a figure is (#2855)

* Make it clear what a figure is

This commit will:
- make the term "figure" clear to people who have never played blackjack before

* Update exercises/concept/blackjack/.docs/instructions.md

Co-authored-by: Jeremy Walker <jez.walker@gmail.com>

---------

Co-authored-by: Jeremy Walker <jez.walker@gmail.com>

Author: chrollorifat

exercises/concept/blackjack/.docs/instructions.md

@@ -26,7 +26,7 @@ Depending on your two cards and the card of the dealer, there is a strategy for
 Although not optimal yet, you will follow the strategy your friend Alex has been developing, which is as follows:
 
 - If you have a pair of aces you must always split them.
-- If you have a Blackjack (two cards that sum up to a value of 21), and the dealer does not have an ace, a figure or a ten then you automatically win. If the dealer does have any of those cards then you'll have to stand and wait for the reveal of the other card.
+- If you have a Blackjack (two cards that sum up to a value of 21), and the dealer does not have an ace, a face card (Jack/Queen/King) or a ten then you automatically win. If the dealer does have any of those cards then you'll have to stand and wait for the reveal of the other card.
 - If your cards sum up to a value within the range [17, 20] you should always stand.
 - If your cards sum up to a value within the range [12, 16] you should always stand unless the dealer has a 7 or higher, in which case you should always hit.
 - If your cards sum up to 11 or lower you should always hit.