I don't believe TDF is the copyright owner of the documentation Jean is referring to.
They are not works produced for hire (an important case rather specific to US Copyright Law) and without an explicit transfer of copyright to the TDF, the TDF has at most the license that is offered on the works by their authors.
I am confident that an organization that avoids collecting CLAs of any flavor and accepts licenses to code via e-mail declarations is not getting any copyrights from anyone [;<).
- Dennis