Add mention to the main README about new libraries [ci skip]

Action Mailbox and Action Text belong to rails/rails since #34786 and #34873.

1 files changed, 3 insertions, 3 deletions

diff --git a/README.md b/README.md
index 56d2b9909c..566136e2a2 100644
--- a/README.md
+++ b/README.md
@@ -44,11 +44,11 @@ or to generate the body of an email. In Rails, View generation is handled by [Ac
 
 [Active Record](activerecord/README.rdoc), [Active Model](activemodel/README.rdoc), [Action Pack](actionpack/README.rdoc), and [Action View](actionview/README.rdoc) can each be used independently outside Rails.
 In addition to that, Rails also comes with [Action Mailer](actionmailer/README.rdoc), a library
-to generate and send emails; [Active Job](activejob/README.md), a
-framework for declaring jobs and making them run on a variety of queuing
+to generate and send emails; [Action Mailbox](actionmailbox/README.md), a library to receive emails within a Rails application;
+[Active Job](activejob/README.md), a framework for declaring jobs and making them run on a variety of queuing
 backends; [Action Cable](actioncable/README.md), a framework to
 integrate WebSockets with a Rails application; [Active Storage](activestorage/README.md), a library to attach cloud
-and local files to Rails applications;
+and local files to Rails applications; [Action Text](actiontext/README.md), a library to handle rich text content;
 and [Active Support](activesupport/README.rdoc), a collection
 of utility classes and standard library extensions that are useful for Rails,
 and may also be used independently outside Rails.