Update article.md

Wording on internal name and Function Declarations.

Author: paroche

1-js/06-advanced-functions/06-function-object/article.md

@@ -329,7 +329,7 @@ Now it works, because the name `"func"` is function-local. It is not taken from
 The outer code still has it's variable `sayHi` or `welcome`. And `func` is an "internal function name", how the function can call itself internally.
 
 ```smart header="There's no such thing for Function Declaration"
-The "internal name" feature described here is only available for Function Expressions, not to Function Declarations. For Function Declarations, there's just no syntax possibility to add a one more "internal" name.
+The "internal name" feature described here is only available for Function Expressions, not for Function Declarations. For Function Declarations, there is no syntax for adding an "internal" name.
 
 Sometimes, when we need a reliable internal name, it's the reason to rewrite a Function Declaration to Named Function Expression form.
 ```