Update ansible_remote|ssh_authorized_key_file doc
Update ansible_remote|ssh_authorized_key_file doc

Reflect the change made to the way `ansible_remote` provisioner pass the
SSH private key file to Ansible [GH-5869]
grubernaut/packer,youhong316/packer,mkuzmin/packer,hashicorp/packer,tas50/packer,rnaveiras/packer,youhong316/packer,rnaveiras/packer,grubernaut/packer,grubernaut/packer,bryson/packer,paulmey/packer,mitchellh/packer,hashicorp/packer,bryson/packer,ricardclau/packer,mkuzmin/packer,mkuzmin/packer,dave2/packer,tas50/packer,grubernaut/packer,ricardclau/packer,dave2/packer,pecigonzalo/packer,mitchellh/packer,grubernaut/packer,tas50/packer,pecigonzalo/packer,paulmey/packer,paulmey/packer,dave2/packer,mkuzmin/packer,timsutton/packer,timsutton/packer,bryson/packer,mitchellh/packer,hashicorp/packer,timsutton/packer,dave2/packer,rnaveiras/packer,ricardclau/packer,dave2/packer,pecigonzalo/packer,mitchellh/packer,rnaveiras/packer,mkuzmin/packer,tas50/packer,paulmey/packer,rnaveiras/packer,rnaveiras/packer,ricardclau/packer,timsutton/packer,paulmey/packer,timsutton/packer,tas50/packer,youhong316/packer,youhong316/packer,tas50/packer,timsutton/packer,youhong316/packer,mitchellh/packer,grubernaut/packer,ricardclau/packer,paulmey/packer,bryson/packer,bryson/packer,mkuzmin/packer,hashicorp/packer,pecigonzalo/packer,bryson/packer,ricardclau/packer,youhong316/packer,dave2/packer