Fixed.

In D22248#487594, @gjb wrote:

While I agree with mat, please go ahead and commit the change.
The Handbook does not directly use the entities used by the website, which I would like to change to be version-specific, to eliminate some overlap between the two sets of used entities.
For example, see r53534 of share/xml/freebsd.ent, where the 'rel121.current' (and related) entities were added.
To mat's comment, yes, this needs further revisiting, but this at least resolves the immediate problem.

In D22248#486752, @mat wrote:

Isn't there some place where this value can come from? Because it feels a bit silly to have to update that every couple of years.

In D22248#486357, @bcr wrote:

I think we have a variable for the current release: &rel.current;
Can you try that and see if the has the desired effect? That way, we don't have to touch that fine each time when there is a new CURRENT release branch.

Make the diff from the root directory.

In D22221#485618, @bcr wrote:

Approved. Can you commit that change yourself or should I?
Thanks for picking this up.