Always good to check with upper management.
"Hey boss' boss, just wanted to run this by you. My boss needs me to document trivial IT tasks that the intern (that we don't have) should be able to look up without a problem and spend time and company money maintaining them so that he, not I, can repeatedly do entry level tasks without needing to get assistance from elsewhere. I'm happy to do this but this puts us at risk of the documentation being wrong since I am just making copies of the industry or vendor documentation, and because it is impossible to keep every internal doc continuously in sync with the latest vendor changes, guidelines and best practices. Just wanted to make sure that you agree that making this kind of documentation, all for one person, is a good use of government financial resources?"