fix: fcos-zfs workflow now uses correct path (#63) #279

Job	Run time
Get CoreOS versions	9s
Get Build Info	1s
Build uCore (ucore, stable, -zfs)	3m 50s
Build uCore (ucore, stable)	2m 38s
Build uCore (ucore, testing, -zfs)	4m 7s
Build uCore (ucore, testing)	3m 3s
Build CoreOS ZFS (fedora-coreos-zfs, stable)	2m 29s
Build CoreOS ZFS (fedora-coreos-zfs, testing)	2m 42s
Build HCI (ucore, stable, -zfs)	3m 31s
Build HCI (ucore, stable)	4m 4s
Build HCI (ucore, testing, -zfs)	4m 3s
Build HCI (ucore, testing)	4m 49s
	35m 26s

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