Link to fullscreen view broken in documentation

[zonca]

At https://jupyterlite-sphinx.readthedocs.io/en/latest/full.html

if I try to click on the relative urls, they are interpreted as anchors and so do not work:

https://jupyterlite-sphinx.readthedocs.io/en/latest/full.html#./lite/lab/index.html

Instead they should point to https://jupyterlite-sphinx.readthedocs.io/en/latest/lite/lab/index.html

[martinRenou]

Thank you for reporting this, would you like to open a PR?

[zonca]

I gave it a try but could not make it working, the relative url was interpreted as a file by sphinx