Fixes minor typo in doc/compose-server.md
Fixes minor typo in doc/compose-server.md
mdshuai/rpm-ostree,mdshuai/rpm-ostree,tmp-user/rpm-ostree,mdshuai/rpm-ostree,tmp-user/rpm-ostree,tmp-user/rpm-ostree,mdshuai/rpm-ostree,tmp-user/rpm-ostree