Fix documentation conf for readthedocs deprecations (#485) #2500

Job	Run time
docs	2m 1s
examples	2m 47s
coverage	1m 37s
benchmarks	1m 26s
pin	2m 36s
pre-commit	3m 15s
test (ubuntu-latest, 3.12)	1m 32s
test (macos-latest, 3.12)	1m 22s
tutorials_list	3s
test (windows-latest, 3.12)	3m 19s
tutorials (tutorials/arm_repertoire.ipynb)	1m 35s
tutorials (tutorials/cma_mae.ipynb)	8m 7s
tutorials (tutorials/features/example.ipynb)	42s
tutorials (tutorials/fooling_mnist.ipynb)	3m 21s
tutorials (tutorials/lsi_mnist.ipynb)	8m 38s
tutorials (tutorials/lunar_lander.ipynb)	10m 8s
tutorials (tutorials/scalable_cma_mae.ipynb)	4m 22s
deploy	0s
	56m 51s

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