Recovery phrase blog post link (#1184)

Adds a link to a great explainer on how recovery phrases are constructed, to the recovery phrase entry in the glossary.

Author: GBKS

guide/glossary/index.md

@@ -356,7 +356,7 @@ A node policy that allows an unconfirmed transaction to be replaced with a diffe
 
 _Also referred to as Seed, Mnemonic, and Backup phrase._
 
-The controlling keypair of a bitcoin wallet can be derived from a *recovery phrase* of 12 words (it can also be 18 or 24 words, which is less common and not recommended as it does not provide better security) from a standardized list, defined in [BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki). The recovery phrase provides full access to a bitcoin wallet as it contains the private key and is therefore very valuable. It’s extremely important to keep it safe, both from other people getting access to it and for yourself not to lose it by creating one or several backups of the phrase. In many applications, most of this work falls on the user, and it’s important to acknowledge the responsibility here of the makers of the application to ensure that the user is able and aware of how to securely store a recovery phrase backup.
+The controlling keypair of a bitcoin wallet can be derived from a *recovery phrase* of 12 words (it can also be 18 or 24 words, which is less common and not recommended as it does not provide better security) from a standardized list, defined in [BIP39](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki). [Learn here](https://bennet.org/blog/how-secure-is-your-bitcoin-wallets-mnemonic-seed-phrase/) how the words are chosen. The recovery phrase provides full access to a bitcoin wallet as it contains the private key and is therefore very valuable. It’s extremely important to keep it safe, both from other people getting access to it and for yourself not to lose it by creating one or several backups of the phrase. In many applications, most of this work falls on the user, and it’s important to acknowledge the responsibility here of the makers of the application to ensure that the user is able and aware of how to securely store a recovery phrase backup.
 
 Many wallet-applications work with HD wallets and recovery phrases, and are interoperable, meaning you can change the application that can control your wallet should you wish (although there are some caveats depending on if they support just BIP32 or also BIP44).