Fix machine parameter formatting in VM script

vm/umbrel-os-vm.sh

@@ -273,7 +273,7 @@ function extract_xz_with_pv() {
 
 function default_settings() {
   VMID=$(get_valid_nextid)
-  MACHINE="q35"
+  MACHINE=" -machine q35"
   FORMAT=""
   DISK_SIZE="32G"
   HN="umbrelos"
@@ -564,7 +564,7 @@ mkdir -p "$CACHE_DIR" "$(dirname "$FILE_IMG")"
 
 download_and_validate_xz "$URL" "$CACHE_FILE"
 
-qm create $VMID -machine q35 -bios ovmf -agent 1 -tablet 0 -localtime 1 ${CPU_TYPE} \
+qm create $VMID${MACHINE} -bios ovmf -agent 1 -tablet 0 -localtime 1 ${CPU_TYPE} \
   -cores "$CORE_COUNT" -memory "$RAM_SIZE" -name "$HN" -tags community-script \
   -net0 "virtio,bridge=$BRG,macaddr=$MAC$VLAN$MTU" -onboot 1 -ostype l26 -scsihw virtio-scsi-pci >/dev/null