Update petsStartingWithH filter for case insensitivity

Refactor petsStartingWithH to handle case sensitivity.

Author: marthak1

Sprint-3/3-dead-code/exercise-2.js

@@ -2,8 +2,9 @@
 // The countAndCapitalisePets function should continue to work for any reasonable input it's given, and you shouldn't modify the pets variable.
 
 const pets = ["parrot", "hamster", "horse", "dog", "hamster", "cat", "hamster"];
-const petsStartingWithH = pets.filter((pet) => pet[0] === "h");
-
+const petsStartingWithH = pets.filter(
+  (pet) => pet[0].toLowerCase() === "h"
+);
 
 function countAndCapitalisePets(petsArr) {
   const petCount = {};