update webp demo video

Author: rocksdanister

changelog/assets/latest/webp.mp4

@@ -70,7 +70,7 @@ <h3 id="grid-pause">Grid Pause Algorithm</h3>
     <h3 id="language">Animated WebP Support</h3>
     <div class="media-border">
       <video id="promo-webp" class="video" loop muted>
-        <source src="assets/latest/webp.mp4" type="video/mp4" />
+        <source src="assets/latest/webp_support.mp4" type="video/mp4" />
       </video>
     </div>
     <ul>