fix: updated the examples link (#22685)

index.html

@@ -37,7 +37,7 @@
 
 				<div id="sections">
 					<a href="docs/index.html#manual/introduction/Creating-a-scene">docs</a>
-					<a href="examples/#webgl_animation_cloth">examples</a>
+					<a href="examples/#webgl_animation_keyframes">examples</a>
 				</div>
 
 				<div id="expandButton"></div>