https://www.ohwr.org/documents/88 points to a wrong URL
https://www.ohwr.org/documents/88
points to
https://www.ohwr.org/project/cernohl/wikis/Documents/CERN-OHL-version-1.1.
while it should:
https://www.ohwr.org/project/cernohl/wikis/Documents/CERN-OHL-version-1.1
(The dot at the end should be removed)