docs: fix markdown for includenotfound and requirenotfound

[lbarthelemy]

Pull request checklist

Bugfix

• [ ] A testcase was added to test the behavior

New feature

• [ ] A testcase was added to test the behavior
• [ ] wiki-creator.py was run and a new wiki document was filled with information
• [ ] New functions are documented with docstrings
• [ ] No debug code is left
• [ ] README.md was updated to reflect the changes (check even if n.a.)

[priv-kweihmann]

Merci