Removing excess div closing tag in CubicInterpolant.html

docs/api/math/interpolants/CubicInterpolant.html

@@ -78,8 +78,6 @@ interpolant.evaluate( 0.5 );
 		Evaluate the interpolant at position *t*.
 		</div>
 
-		</div>
-
 		<h2>Source</h2>
 
 		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]