refined doc

documents/docs/automator/overview.md

@@ -51,7 +51,7 @@ You can find the reference for a basic `Command` class below:
             ...
 
 
-## Invoker
+## Invoker (AppPuppeteer)
 
 The `AppPuppeteer` plays the role of the invoker in the Automator application. It triggers the commands to be executed by the receivers. The `AppPuppeteer` equips the `AppAgent` with the capability to interact with the application's UI controls. It provides functionalities to translate action strings into specific actions and execute them. All available actions are registered in the `Puppeteer` with the `ReceiverManager` class.
 
@@ -61,4 +61,12 @@ You can find the implementation of the `AppPuppeteer` class in the `ufo/automato
 
 <br>
 
+
+## Receiver Manager
+The `ReceiverManager` manages all the receivers and commands in the Automator application. It provides functionalities to register and retrieve receivers and commands. It is a complementary component to the `AppPuppeteer`.
+
+::: automator.puppeteer.ReceiverManager
+
+<br>
+
 For further details, refer to the specific documentation for each component and class in the Automator module.