update zh-cn/application-dev/reference/apis/js-apis-arkui-drawableDescriptor.md.

修改命名错误
Signed-off-by: N末日拿铁 <chenpeng242@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-arkui-drawableDescriptor.md

@@ -159,8 +159,8 @@ getMask(): DrawableDescriptor;
 drawable: DrawableDescriptor = (<LayeredDrawableDescriptor> (this.resManager.getDrawableDescriptor($r('app.media.drawable')
     .id))).getMask();
   ```
-## LayeredDrawableDescriptor.getMashClipPath
-static getMashClipPath(): string
+## LayeredDrawableDescriptor.getMaskClipPath
+static getMaskClipPath(): string
 
 LayeredDrawableDescriptor的静态方法，获取系统内置的裁切路径参数。