comments cleaned up

There were still some notices from the original maintainer who no longer works
on this project. After the decision was made, that the mailing list and
Stammtisch should be contacted if there is any need for that.

Signed-off-by: Erik Bernoth <erik.bernoth@gmail.com>
module renamed

Today at the Stammtisch we decided that the module shouldn't be named
`embedded_monk` but `monk_tf`. This commit just contains the renaming.

Signed-off-by: Erik Bernoth <erik.bernoth@gmail.com>