left hand TOC missing on docs

[MatthewFlamm]

See https://matthewflamm.github.io/pyransame/examples/plot_01_random_surface_sampling.html#sphx-glr-examples-plot-01-random-surface-sampling-py

This doesn't show up when viewing the docs built in codespaces.

Probably due to https://github.com/pydata/pydata-sphinx-theme/issues/1625