Create a function that takes a string as an argument and converts the first character of each word to uppercase. Return the newly formatted string.
make_title("This is a title") ➞ "This Is A Title"
make_title("capitalize every word") ➞ "Capitalize Every Word"
make_title("I Like Pizza") ➞ "I Like Pizza"
make_title("PIZZA PIZZA PIZZA") ➞ "PIZZA PIZZA PIZZA"