zh doc: a little fix in matrix4

docs/api/zh/math/Matrix4.html

@@ -116,7 +116,7 @@ m.elements = [ 11, 21, 31, 41,
 
 		<h3>[method:this compose]( [param:Vector3 position], [param:Quaternion quaternion], [param:Vector3 scale] )</h3>
 		<p>
-		设置将该对象由位置[page:Vector3 position]，四元数[page:Quaternion quaternion] 和 缩放[page:Vector3 scale]
+		设置将该对象位置 [page:Vector3 position]，四元数[page:Quaternion quaternion] 和 缩放[page:Vector3 scale] 组合变换的矩阵。
 		</p>
 
 		<h3>[method:this copy]( [param:Matrix4 m] )</h3>