Check link checking problem

[programmiri]

Description

• after update to Docusaurus 3, some link checks fail when running npm run start for valid and working links to .md files. It's always file where the path is e.g. ../../docs. The link do work, so we may be able to set the broken link check to warn. It's recommended to use .md links when possible.

BUT

• the markdown-link-check job in the pipeline currently does not fail the job when it's having an error. This needs to be fixed before changing the error to warn

Todo

• get link check pipeline to fail when it should
• check why brokenLinkCheck for docusaurus fails, if needed set to warn instead of error