Remove apostrophe to make comment consistent (wesbos#326)

Remove apostrophe to make comment consistent

04 - Array Cardio Day 1/index-START.html

@@ -33,7 +33,7 @@
     // 1. Filter the list of inventors for those who were born in the 1500's
 
     // Array.prototype.map()
-    // 2. Give us an array of the inventors' first and last names
+    // 2. Give us an array of the inventors first and last names
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest