Two outdated things in the documentation

[rh-fred]

Hi Team,

I am looking for 2 things in your documentation :

• The project matrix root on the main README.md seems not to work
• More importantly there is a reference to an non-existent issue in docs/features/identity.md regarding a potential personal data leak. I really need to know more about that. Could someone find an archive or some helpful information about that?

Best regards,
Fred