update et fix de boolean

subjects/boolean.en.md

@@ -2,11 +2,16 @@
 
 ### Instructions
 
-Create a `.go` file and copy the code below into that file
-and add the code necessary so the program works.
+Create a `.go` file.
+
+- The code below has to be copied in that file.
+
+- The necessary changes have to be applied so that the program works.
 
 - The program must be submitted inside a folder with the name `boolean`.
 
+### Code to be copied
+
 ```go
 func printStr(str string) {
 	arrayStr := []rune(str)

subjects/boolean.fr.md

@@ -2,9 +2,16 @@
 
 ### Instructions
 
-Create a `.go` file and copy the code below into our file
+Créer un fichier `.go`.
 
-- The main task is to return a working program.
+- Le code ci-dessous doit être copié dans ce fichier.
+
+- Les changements nécéssaires doivent être appliquer et the code below into that file
+  and do the necessary changes so that the program works.
+
+- Le programme doit être rendu dans un dossier nommé `boolean`.
+
+### Code à copier
 
 ```go
 func printStr(str string) {
@@ -33,14 +40,12 @@ func main() {
 }
 ```
 
-### Expected output
+### Usage
 
 ```console
+student@ubuntu:~/student/boolean$ go build
+student@ubuntu:~/student/boolean$ ./boolean "not" "odd"
 I have an even number of arguments
-```
-
-### Or
-
-```console
+student@ubuntu:~/student/boolean$ ./boolean "not even"
 I have an odd number of arguments
 ```