Clarified password management.

Author: dobooth

guides/v2.3/architecture/security_intro.md

@@ -8,7 +8,7 @@ menu_order:
 
 ## Enhanced password management
 
-Magento has strengthened the hashing algorithms (SHA-256) used in password management. In addition, we added support for Argon2ID13, which is used by default in PHP 7.2 or if you have installed the Libsodium extension for PHP.
+Magento has strengthened the hashing algorithms (SHA-256) used in password management. In addition, we added support for Argon2ID13, which is available by default in PHP 7.2.
 
 ## Improved prevention of cross-site scripting (XSS) attacks by making escaped data the default