SlicerWeb.ipynb open 3D Slicer 404

[hualiny]

After building docker from the Dockerfile in this repo, I open SlicerWeb.ipynb and when I click Click here to open 3D Slicer in a new window, it cause 404 error. So I can only open 3D slicer application by inputting http://localhost:8888/desktop in web browser. So I change <a href="../desktop" target="_blank"> to <a href="/desktop" target="_blank">, and It works.