Updates links to related documentations

Author: froschdesign

docs/book/v1/intro.md

@@ -10,7 +10,8 @@ is provided during authentication.
 Authentication is provided via the package
 [zend-expressive-authentication](https://docs.zendframework.com/zend-expressive-authentication/).
 That library provides an `AuthenticationMiddleware` class that verify
-credentials using the HTTP request, and stores the identity via a [PSR-7 request attribute](https://docs.zendframework.com/zend-expressive/v2/cookbook/passing-data-between-middleware/).
+credentials using the HTTP request, and stores the identity via a
+[PSR-7 request attribute](https://docs.zendframework.com/zend-expressive/v3/cookbook/passing-data-between-middleware/).
 
 The identity generated by zend-expressive-authentication is stored as the
 request attribute `Zend\Expressive\Authentication\UserInterface` as a
@@ -54,9 +55,9 @@ Authorization is performed using the `isGranted()` method of the
 
 We offer two adapters:
 
-- [zend-expressive-authorization-rbac](https://github.com/zendframework/zend-expressive-authorization-rbac),
+- [zend-expressive-authorization-rbac](https://docs.zendframework.com/zend-expressive-authorization-rbac/),
   which implements Role-Based Access Controls ([RBAC](https://en.wikipedia.org/wiki/Role-based_access_control))
-- [zend-expressive-authorization-acl](https://github.com/zendframework/zend-expressive-authorization-acl/),
+- [zend-expressive-authorization-acl](https://docs.zendframework.com/zend-expressive-authorization-acl/),
   which implements an Access Control List ([ACL](https://en.wikipedia.org/wiki/Access_control_list)).
 
 > If you want to know more about authentication using middleware in PHP,