Broken links in Core Security section

[grempe]

In:

https://book.keybase.io/docs/crypto#core-security

There are three broken links in this single section. You need to run link checking tools on this whole book.

https://book.keybase.io/docs/server_security https://book.keybase.io/docs/server_security/merkle_root_in_bitcoin_blockchain https://book.keybase.io/docs/sigchain

All return a 404 page where the only content is the word 404

[benaltair]

I see the same problem. All three links in this section lead to 404 pages.

When accessing the MD file from Github, you can see Github 404s like on the first link: https://github.com/keybase/book-content/blob/master/docs/server_security

I believe something was moved and the links weren't updated.