docs: fix typo in README #503

Job	Run time
build-testing / Get Stream Info	9s
build-testing / Get Workflow Info	1s
build-testing / fedora-coreos (-nvidia, -zfs)	1m 34s
build-testing / ucore (-minimal, -nvidia, -zfs)	1m 56s
build-testing / fedora-coreos (-nvidia)	1m 32s
build-testing / ucore (-minimal, -nvidia)	2m 8s
build-testing / fedora-coreos (-zfs)	1m 30s
build-testing / ucore (-minimal, -zfs)	1m 26s
build-testing / ucore (-minimal)	1m 15s
build-testing / ucore (-nvidia, -zfs)	2m 25s
build-testing / ucore (-nvidia)	2m 29s
build-testing / ucore (-zfs)	2m 23s
build-testing / ucore	2m 10s
build-testing / ucore (-hci, -nvidia, -zfs)	3m 59s
build-testing / ucore (-hci, -nvidia)	4m 14s
build-testing / ucore (-hci, -zfs)	3m 37s
build-testing / ucore (-hci)	3m 38s
build-testing / Check all successful	1s
	36m 27s

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