fixed the bug of the initials variable

Author: Ebrahim-Moqbel

Sprint-1/1-key-exercises/2-initials.js

@@ -5,7 +5,7 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ` ${firstName.charAt(0)}, ${middleName.charAt(0), lastName.charAt(0)}`;
+let initials = ` ${firstName.charAt(0)}, ${middleName.charAt(0)}, ${lastName.charAt(0)}`;
 
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn