case 5 not 4

animations/stack/index.html

@@ -14,7 +14,7 @@
 <button onclick="case2()">Case 2: "()[]{}"</button>
 <button onclick="case3()">Case 3: "(]"</button>
 <button onclick="case4()">Case 4: "([])"</button>
-<button onclick="case5()">Case 4: "{[([])]}"</button>
+<button onclick="case5()">Case 5: "{[([])]}"</button>
 
 <div id="container"></div>
 <script src="stack.js"></script>