Update index.html

Author: josemoracard

exercises/05-Specificity/index.html

@@ -11,7 +11,7 @@
 			<li>My first item of the list</li>
 			<li>My second item of the list</li>
 			<li id="thirditem">My third item of the list</li>
-			<li>My forth item of the list</li>
+			<li>My fourth item of the list</li>
 			<li>My fifth item of the list</li>
 		</ul>
 	</body>