ENGCOM-5656: Update Magento_Amqp ReadMe #24178

Author: sidolov

app/code/Magento/Amqp/README.md

@@ -1,3 +1,9 @@
-# Amqp
+# Magento_Amqp module
 
-**Amqp** provides functionality to publish/consume messages with Amqp.
+Magento_Amqp module provides functionality to publish/consume messages with the Advanced Message Queuing Protocol (AMQP).
+
+## Extensibility
+
+Extension developers can interact with the Magento_Amqp module. For more information about the Magento extension mechanism, see [Magento plug-ins](https://devdocs.magento.com/guides/v2.3/extension-dev-guide/plugins.html).
+
+[The Magento dependency injection mechanism](https://devdocs.magento.com/guides/v2.3/extension-dev-guide/depend-inj.html) enables you to override the functionality of the Magento_Amqp module.