build

docs: update readthedocs setup #3738

Job	Run time
muon minimal static	34s
nvme-cli (clang, release)	1m 2s
make static	37s
build libnvme and nvme-cli separately	41s
nvme-cli (gcc, release)	53s
cross (s390x)	44s
libnvme (clang, debug)	42s
libnvme (clang, release)	44s
cross (ppc64le)	41s
cross (armhf)	52s
libnvme (gcc, release)	42s
nvme-cli (gcc, debug)	43s
libnvme (gcc, debug)	39s
nvme-cli (clang, debug)	51s
fallback shared libraries	0s
	10m 25s

Provide feedback