fix: fcos-zfs workflow now uses correct path #278

Job	Run time
Get Build Info	2s
Get CoreOS versions	5s
Build CoreOS ZFS (fedora-coreos-zfs, stable, pr-63-)	2m 53s
Build CoreOS ZFS (fedora-coreos-zfs, testing, pr-63-)	2m 56s
Build uCore (ucore, stable, -zfs, pr-63-)	3m 18s
Build uCore (ucore, stable, pr-63-)	3m 38s
Build uCore (ucore, testing, -zfs, pr-63-)	3m 46s
Build uCore (ucore, testing, pr-63-)	2m 43s
Build HCI (ucore, stable, -zfs, pr-63-)	3m 12s
Build HCI (ucore, stable, pr-63-)	3m 0s
Build HCI (ucore, testing, -zfs, pr-63-)	4m 4s
Build HCI (ucore, testing, pr-63-)	3m 26s
	33m 3s

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