syntax change

Author: pathywang

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[0]+middleName[0]+lastName[0]:
+let initials = firstName[0]+middleName[0]+lastName[0];
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn