docs: fix default value for sshauth option of libssh2/libssh
docs: fix default value for sshauth option of libssh2/libssh

Both transports include "password" in their default authentication
methods.

nertpinx/libvirt,fabianfreyer/libvirt,taget/libvirt,eskultety/libvirt,VenkatDatta/libvirt,crobinso/libvirt,datto/libvirt,taget/libvirt,jfehlig/libvirt,olafhering/libvirt,libvirt/libvirt,nertpinx/libvirt,crobinso/libvirt,taget/libvirt,zippy2/libvirt,libvirt/libvirt,jfehlig/libvirt,jardasgit/libvirt,jardasgit/libvirt,jardasgit/libvirt,crobinso/libvirt,olafhering/libvirt,eskultety/libvirt,zippy2/libvirt,taget/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,eskultety/libvirt,olafhering/libvirt,nertpinx/libvirt,datto/libvirt,jfehlig/libvirt,andreabolognani/libvirt,zippy2/libvirt,andreabolognani/libvirt,jardasgit/libvirt,datto/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,datto/libvirt,jardasgit/libvirt,taget/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,eskultety/libvirt,crobinso/libvirt,libvirt/libvirt,zippy2/libvirt,eskultety/libvirt,libvirt/libvirt,datto/libvirt,olafhering/libvirt,VenkatDatta/libvirt