Add handbook to dns

[niilasoika]

handbook.testausserveri.fi / testausserveri/handbook I created a organization to gitbook for testausserveri, anyone else can join it with their @testausserveri.fi email if they want to. The github repo is also open for contributions.

[vercel[bot]]

@niilasoika is attempting to deploy a commit to a Personal Account owned by @Testausserveri on Vercel.

@Testausserveri first needs to authorize it.

[github-actions[bot]]

******************** Domain: testausserveri.fi
Done. 0 corrections.

[niilasoika]

Actually, please do not approve this PR yet. Im going to research other options first :D