correction: new features for AFS 3.5

[Pierette_Maniago_VanRyzin]

> Vos remove removes both types of volume, RO and RW - and thats where
> the server/part specification problem comes into play.  Its required
> for one, but not the other.

That should read "It is necessary for one but not the other - and for
that reason is required for both."

Pierette