docs(dealapackofcards): refactor instructions, fix indentation

subjects/dealapackofcards/README.md

@@ -4,7 +4,7 @@
 
 Deal a pack of `12` cards evenly between 4 players, `Player 1`, `Player 2`, `Player 3` and `Player 4`.
 
-Write a function `DealAPackOfCards()` that takes an argument `deck` as an `int` and prints the desired output.
+Write a function `DealAPackOfCards()` that takes the argument, `deck`, as a slice of `int` and prints the desired output.
 
 - Each player must be printed in a different line.
 
@@ -27,13 +27,13 @@ import "piscine"
 
 func main() {
 	deck := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
-  	piscine.DealAPackOfCards(deck)
+	piscine.DealAPackOfCards(deck)
 }
 ```
 
 And its output:
 
-```go
+```console
 $ go run . | cat -e
 Player 1: 1, 2, 3$
 Player 2: 4, 5, 6$