feat: update toc of readmes

Author: Saiya

packages/duplex-message/README.md

@@ -29,7 +29,7 @@
 - [Install](#install)
 - [Example](#example)
 - [Usage](#usage)
-  - [import \& debug](#import--debug)
+  - [Import \& Debug](#import--debug)
   - [constructor](#constructor)
   - [Shared instance](#shared-instance)
   - [on](#on)
@@ -40,7 +40,10 @@
   - [proxy for PostMessageHub](#proxy-for-postmessagehub)
   - [dedicated instance for PostMessageHub](#dedicated-instance-for-postmessagehub)
   - [Error](#error)
+- [FAQ](#faq)
+  - [How to deal with the error `no corresponding handler found for method xxx`?](#how-to-deal-with-the-error-no-corresponding-handler-found-for-method-xxx)
 - [Development](#development)
+- [License](#license)
 
 
 ## Features

packages/simple-electron-ipc/README.md

@@ -22,11 +22,12 @@
 - [Install](#install)
 - [Example](#example)
 - [Usage](#usage)
-  - [MainMessageHub & RendererMessageHub](#mainmessagehub--renderermessagehub)
+  - [MainMessageHub \& RendererMessageHub](#mainmessagehub--renderermessagehub)
   - [emit](#emit)
   - [on](#on)
   - [progress](#progress)
   - [off](#off)
+  - [destroy](#destroy)
   - [Error](#error)
   - [Debug](#debug)
 ## Features
@@ -297,7 +298,7 @@ mainMessageHub.off(peer: WebContents | '*', methodName?: string)
 rendererMessageHub.off(methodName?: string)
 ```
 
-#### destroy
+### destroy
 Destroy instance: remove all message handlers and references of objects.
 Any invoking of destroyed instance's methods will throw an exception