Memunit config defaults say "KB" rather than "KBytes"
E.g.
V(AuthDirFastGuarantee, MEMUNIT, "100 KB"),
V(AuthDirGuardBWGuarantee, MEMUNIT, "2 MB"),
and others. These should say "100 KBytes", "2 MBytes", etc, in the same way that we've updated the documentation and sample configs and so on.