@jgsogo no, that is a FAQ for the removal of old versions of a reference. Here I am referring to the deprecation of the complete recipe that can happen because of different reasons:
Library changed name.
Library project moved to another repo under a different name.
Related to https://github.com/conan-io/conan-center-index/issues/9900
AFAIK the deprecation policy is still not added to the documentation although we already have some recipes that went through that process.