docs: Update --timeout description in libvirtd's man page
docs: Update --timeout description in libvirtd's man page

Since commit @ae2163f8, only active client connections or running
domains are allowed to inhibit daemon shutdown. The man page however
wasn't updated appropriately.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1325066

Signed-off-by: Erik Skultety <2c14d38fa47c8799f1b9c16280abe27f8edfec6e@redhat.com>
Reviewed-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>

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