Add clarification on exercise "Split"

subjects/go-reloaded/go-reloaded.en.md

@@ -466,8 +466,7 @@ student@ubuntu:~/[[ROOT]]/test$
 
 ### Instructions
 
-Write a function that separates the words of a `string` and puts them in a `string` array.
-
+Write a [function](TODO-LINK) that simulates the behaviour of the `strings.Split` function in Go. `strings.Split` separates the words of a `string` and puts them in a `string` array.
 The separators are the characters of the `charset string` given in parameter.
 
 ### Expected function