add DOI falsehoods

[gedankenstuecke]

Motivation

The new link adds a good primer on what can and can't be inferred from DOIs and how (not) to handle them. DOIs are widely used for referencing and linking the academic literature but also beyond, thus they are widespread but misunderstood

Affiliation

• [ ] I am the author of the article or project
• [ ] I am working for/with the company which is publishing the article or project
• [x] I'm just a rando who stumbled upon this via social networks

Self checks

• [x] I have read the Code of Conduct
• [x] I applied all rules from the Contributing guide
• [x] I have checked there is no other Issues or Pull Requests covering the same topic to open