Page issue: Digitizer Mending - Missing video

There is an issue with page [Digitizer Mending](http://digimend.github.io/): the 4th and last video on the page seems not to exist anymore on YouTube:

![image](https://user-images.githubusercontent.com/584411/150017220-e3a78826-6e3f-48e4-bd2b-26c0179e7e24.png)


