fixed copy-paste error: Vector3 => Box3

docs/api/math/Sphere.html

@@ -84,7 +84,7 @@
 
 		<h3>[method:Box3 getBoundingBox]( [page:Box3 optionalTarget] )</h3>
 		<div>
-			[page:Box3 optionalTarget] - (optional) if specified, the result will be copied into this [page:Vector3], otherwise a new [page:Box3] will be created.<br /><br />
+			[page:Box3 optionalTarget] - (optional) if specified, the result will be copied into this [page:Box3], otherwise a new [page:Box3] will be created.<br /><br />
 
 			Returns a[link:https://en.wikipedia.org/wiki/Minimum_bounding_box Minimum Bounding Box] for the sphere.
 		</div>