Fix typo in test comment

Author: JoelSpeed

controllers/machinehealthcheck_targets_test.go

@@ -197,7 +197,7 @@ func TestHealthCheckTargets(t *testing.T) {
 	conditions.MarkTrue(cluster, clusterv1.InfrastructureReadyCondition)
 	conditions.MarkTrue(cluster, clusterv1.ControlPlaneInitializedCondition)
 
-	// Ensure the control plane was initialized earlier to prevent it intefering with
+	// Ensure the control plane was initialized earlier to prevent it interfering with
 	// NodeStartupTimeout testing.
 	conds := clusterv1.Conditions{}
 	for _, condition := range cluster.GetConditions() {