Couple of small fixes in Object3D docs.

docs/api/core/Object3D.html

@@ -64,12 +64,12 @@
 		Up direction.
 		</div>
 
-		<h3>.[page:Vector3 matrix]</h3>
+		<h3>.[page:Matrix4 matrix]</h3>
 		<div>
 		Local transform.
 		</div>
 
-		<h3>.[page:Vector3 matrixRotationWorld]</h3>
+		<h3>.[page:Matrix4 matrixRotationWorld]</h3>
 		<div>
 		Global rotation.
 		</div>
@@ -85,6 +85,7 @@
 		</div>
 
 		<h3>.[page:Float boundRadius]</h3>
+		<div>Default is 0.0.</div>
 
 		<h3>.[page:Float boundRadiusScale]</h3>
 		<div>