fmf: Fix syntax error in node_modules checkout
fmf: Fix syntax error in node_modules checkout

Introduced in commit 70de12208c4

martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit