docs(concatalternate): upgrade 'func main()'

subjects/concatalernate/README.md

@@ -30,7 +30,7 @@ import (
 
 func main() {
 	fmt.Println(piscine.ConcatAlternate([]int{1, 2, 3}, []int{4, 5, 6}))
-	fmt.Println(piscine.ConcatAlternate([]int{1, 3, 5, 7, 9}, []int{2, 4, 6, 8, 10}))
+	fmt.Println(piscine.ConcatAlternate([]int{2, 4, 6, 8, 10}, []int{1, 3, 5, 7, 9, 11}))
 	fmt.Println(piscine.ConcatAlternate([]int{1, 2, 3}, []int{4, 5, 6, 7, 8, 9}))
 	fmt.Println(piscine.ConcatAlternate([]int{1, 2, 3}, []int{}))
 }
@@ -41,7 +41,7 @@ And its output:
 ```console
 $ go run .
 [1 4 2 5 3 6]
-[1 2 3 4 5 6 7 8 9 10]
+[1 2 3 4 5 6 7 8 9 10 11]
 [4 1 5 2 6 3 7 8 9]
 [1 2 3]
 ```