Merge pull request #2844 from nicolossus/fix_index_html #3669

Job	Run time
clang-format	19s
copyright_headers	13s
cppcheck	5m 14s
forbidden_types	16s
lychee_IGNORED	21s
mypy	33s
pydocstyle	22s
rstcheck	17s
vale	41s
unused_names	14s
black	31s
flake8	19s
pylint	36s
build_macos (macos-latest, clang, openmp, mpi, python, gsl, ltdl, boost, hdf5, optimize, warning)	27m 42s
build_linux (ubuntu-20.04, gcc, boost, optimize, warning)	12m 45s
build_linux (ubuntu-20.04, gcc, openmp, python, gsl, ltdl, boost, optimize, warning)	24m 40s
build_linux (ubuntu-20.04, gcc, mpi, python, gsl, ltdl, boost, optimize, warning)	19m 41s
build_linux (ubuntu-20.04, gcc, openmp, mpi, python, gsl, ltdl, boost, hdf5, sionlib, libneurosim...	27m 1s
sphinx-rtd	3m 54s
sphinx-conda	0s
	2h 5m 39s

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