docs: update default value for `expect_disconnect`
docs: update default value for `expect_disconnect`

grubernaut/packer,KohlsTechnology/packer,grubernaut/packer,routelastresort/packer,ricardclau/packer,atlassian/packer,routelastresort/packer,hashicorp/packer,arizvisa/packer,ChrisLundquist/packer,smaato/packer,paulmey/packer,bryson/packer,ChrisLundquist/packer,markpeek/packer,mitchellh/packer,youhong316/packer,rnaveiras/packer,p1-nico/packer,markpeek/packer,timsutton/packer,KohlsTechnology/packer,ChrisLundquist/packer,tas50/packer,tb3088/packer,taliesins/packer,KohlsTechnology/packer,rnaveiras/packer,smaato/packer,timsutton/packer,hashicorp/packer,atlassian/packer,pecigonzalo/packer,timsutton/packer,KohlsTechnology/packer,tas50/packer,sean-/packer,p1-nico/packer,ricardclau/packer,jen20/packer,mkuzmin/packer,paulmey/packer,taliesins/packer,routelastresort/packer,pecigonzalo/packer,atlassian/packer,dave2/packer,sean-/packer,dave2/packer,smaato/packer,dave2/packer,pieter-lazzaro/packer,sean-/packer,ChrisLundquist/packer,pieter-lazzaro/packer,paulmey/packer,rnaveiras/packer,tb3088/packer,bryson/packer,pvandervelde/packer,taliesins/packer,youhong316/packer,sean-/packer,tas50/packer,sean-/packer,p1-nico/packer,routelastresort/packer,tas50/packer,arizvisa/packer,youhong316/packer,atlassian/packer,bryson/packer,mkuzmin/packer,mkuzmin/packer,markpeek/packer,timsutton/packer,p1-nico/packer,mkuzmin/packer,smaato/packer,mkuzmin/packer,jen20/packer,mkuzmin/packer,tas50/packer,youhong316/packer,dave2/packer,p1-nico/packer,KohlsTechnology/packer,grubernaut/packer,hashicorp/packer,tas50/packer,bryson/packer,youhong316/packer,arizvisa/packer,tb3088/packer,grubernaut/packer,mitchellh/packer,markpeek/packer,paulmey/packer,ricardclau/packer,ChrisLundquist/packer,jen20/packer,smaato/packer,markpeek/packer,jen20/packer,KohlsTechnology/packer,pieter-lazzaro/packer,p1-nico/packer,ricardclau/packer,dave2/packer,atlassian/packer,tb3088/packer,mitchellh/packer,rnaveiras/packer,pieter-lazzaro/packer,mitchellh/packer,sean-/packer,arizvisa/packer,smaato/packer,paulmey/packer,timsutton/packer,pecigonzalo/packer,grubernaut/packer,bryson/packer,pvandervelde/packer,arizvisa/packer,pvandervelde/packer,taliesins/packer,pvandervelde/packer,arizvisa/packer,tb3088/packer,ChrisLundquist/packer,markpeek/packer,pecigonzalo/packer,atlassian/packer,hashicorp/packer,rnaveiras/packer,taliesins/packer,pvandervelde/packer,pieter-lazzaro/packer,ricardclau/packer,grubernaut/packer,paulmey/packer,jen20/packer,dave2/packer,youhong316/packer,ricardclau/packer,tb3088/packer,rnaveiras/packer,routelastresort/packer,taliesins/packer,pieter-lazzaro/packer,jen20/packer,mitchellh/packer,pvandervelde/packer,bryson/packer,timsutton/packer