there should no longer be a number in the clear completed button

so we can just hardcode the text

Author: sindresorhus

index.html

@@ -56,7 +56,7 @@ <h1>todos</h1>
 					</li>
 				</ul>
 				<!-- Hidden if no completed items are left ↓ -->
-				<button class="clear-completed"></button>
+				<button class="clear-completed">Clear completed</button>
 			</footer>
 		</section>
 		<footer class="info">