Fix copy-paste error from Vector2

docs/api/math/Vector4.html

@@ -142,7 +142,7 @@ var d = a.dot( b );
 		<h3>[method:Vector4 divideScalar]( [page:Float s] )</h3>
 		<div>
 		Divides this vector by scalar [page:Float s].<br />
-		Sets vector to *( 0, 0 )* if *[page:Float s] = 0*.
+		Sets vector to *( 0, 0, 0, 0 )* if *[page:Float s] = 0*.
 		</div>
 
 		<h3>[method:Float dot]( [page:Vector4 v] )</h3>