trivial: Add a tiny doc explaining what to change next soname break
trivial: Add a tiny doc explaining what to change next soname break

superm1/fwupd,vathpela/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,fwupd/fwupd,hughsie/fwupd,superm1/fwupd,fwupd/fwupd,superm1/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd