doc/manpages: fix qubes-create.1
doc/manpages: fix qubes-create.1

The --property option went out in
83eef56f9dcf8115189a0e0d331d234f12ad1491.

QubesOS/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin