Improve documentation - how to retrieve the admin password

[gecube]

Good day!

I have a great idea how to improve the documentation. I faced the issue that admin password was lost when installing Netbird + Zitadel self-hosted. Unfortunately, I did not find any way to retrieve it or at least to make a recovery and set up the new one. Sounds weird. I will very appreciate if somebody can describe the procedure and then we could put it to official documentation of Netbird. For me the reinstallation from scratch will work, but it is not the case for everybody, particularly if you already did a lot of settings.