fix(js and ts): typo

- 'gilged' to 'gilded' in respective specs

js/spec/gilded_rose_spec.js

@@ -1,8 +1,8 @@
 describe("Gilded Rose", function() {
 
   it("should foo", function() {
-    const gilgedRose = new Shop([ new Item("foo", 0, 0) ]);
-    const items = gilgedRose.updateQuality();
+    const gildedRose = new Shop([ new Item("foo", 0, 0) ]);
+    const items = gildedRose.updateQuality();
     expect(items[0].name).toEqual("fixme");
   });