Gallery doesn't render on RTD

[martinfleis]

I have merged #122 and it somehow broke the rendering of the gallery on the RTD. Which is strange, because the build made from that PR worked.

https://xyzservices--122.org.readthedocs.build/en/122/gallery.html

vs

https://xyzservices.readthedocs.io/en/latest/gallery.html

It seems that the JS loading the data actually works, but the CSS and JS calling leaflet are not.

[martinfleis]

Seems to work now.