Background:
The documenation files are written in the Apache Forrest/Cocoon system, using the "document" XML format. (This is a simple, but not too simple, format for writing technical documents. Unfortunately, this is since many years not being developed, and was recently declared retired.
However, fixing just this problem is not that hard. I have just updated the xslt transformation that generates the simlified html files. It will direct the user to harctoolbox.org for the files that are not locally available. Checked in and available in the just published CI build.
IrpTransmogrifier.html has the same problem, but has not yet been fixed.
Thanx again!