Update webgpu_skinning_points description

Author: sunag

examples/webgpu_skinning_points.html

@@ -10,7 +10,7 @@
 
 		<div id="info">
 			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - skinning points</br>
-			colors and scale of the points are based on the speed of the skinning
+			colors and scale of the points are based on the speed of the animation
 		</div>
 
 		<script type="importmap">