[racket-dev] accessing @deftech terms in the reference from the guide

Are terms defined via @deftech in the Racket reference supposed to be
accessible via @tech from the Racket guide?

In pkgs/racket-pkgs/racket-doc/scribblings/reference/evts.scrbl there
exists a line that looks like:

  ... @deftech{synchronizable event} ...

In my pkgs/racket-pkgs/racket-doc/scribblings/guide/concurrency.scrbl I
have:

  ... @tech{synchronizable event}s. ...

When I build, I get:

  raco setup: --- building documentation ---
  raco setup: WARNING: undefined tag in <pkgs>/racket-doc/scribblings/guide/guide.scrbl:
  raco setup:  (tech "synchronizable event")

I'm guessing only the @deftech terms defined in the guide are accessible?  This
is not a big deal, I just wanted to be sure I wasn't doing something
incorrectly.

Thanks.

David