Is your feature request related to a problem?

links can be/become outdated or broken.

Describe the solution you'd like

broken links should be reported.

Describe alternatives you've considered

No response

Additional context

note to self: checking mdx isn't enough, see:
https://campus.dariah.eu/resources/events/building-and-linking-humanities-digital-spatial-infrastructures-for-research-in-the-nordic-countries