Update pingpong.html

pingpong.html

@@ -102,7 +102,7 @@
 <br>
 <button onclick="start();">Replay</button>
 
-<h2>PingPong 3.2</h2>
+<h2>PingPong 4.1</h2>
 
 <h4>Fixed first issue, updated colors, and changed the ball to a circle. Increased performance to smooth 60FPS. Added replay button, and increasing difficulty mechanic, where your paddle gets smaller and the ball gets faster the longer you play.</h4>