build

doc: correct id-ns vendor-specific short option #3584

Job	Run time
muon minimal static	37s
nvme-cli (clang, debug)	48s
make static	40s
nvme-cli (clang, release)	52s
nvme-cli (gcc, release)	52s
libnvme (gcc, release)	44s
libnvme (clang, release)	43s
libnvme (gcc, debug)	41s
libnvme (clang, debug)	38s
cross (armhf)	46s
nvme-cli (gcc, debug)	44s
cross (ppc64le)	52s
cross (s390x)	48s
build libnvme and nvme-cli separately	39s
fallback shared libraries	0s
	10m 24s

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