message: doc: fix spyOn example test
diff: @@ -548,8 +548,10 @@ test('plays video', () => {
  spy.mockRestore();
  });
  +const audio = require('./audio');
  +
  test('plays audio', () => {
  - const spy = jest.spyOn(video, 'play', 'set'); // we pass 'set'
  + const spy = jest.spyOn(audio, 'volume', 'set'); // we pass 'set'
  video.volume = 100;
  expect(spy).toHaveBeenCalled();
  