- fix broken closing tag

Author: TobiasMue91

games/stack_tower.html

@@ -219,7 +219,7 @@ <h1>STACK TOWER</h1>
 <div class="modal" id="gameOver" style="display:none">
     <h1>Game Over!</h1>
     <p>Your Score: <span id="finalScore">0</span></p>
-    <button class="btn" onclick="game.restart()">PLAY AGAIN</button
+    <button class="btn" onclick="game.restart()">PLAY AGAIN</button>
 </div>
 <div class="perfect" id="perfectText">PERFECT!</div>
 <div class="combo" id="comboText">Combo x<span id="comboCount">2</span></div>