Update readme

Author: FreePhoenix888

README.md

@@ -4,22 +4,7 @@
 
 A deep package that provides links for working with [`@firebase/messaging`](https://www.npmjs.com/package/@firebase/messaging) and typescript library for comfortable using of this deep package using typescript
 
-# Table Of Contents
-<!-- TABLE_OF_CONTENTS_START -->
-- [Table Of Contents](#table-of-contents)
-- [Usage](#usage)
-  - [Setup](#setup)
-    - [Service Account](#service-account)
-    - [Web Push Certificate](#web-push-certificate)
-    - [Device](#device)
-  - [Push Notification](#push-notification)
-  - [Notify](#notify)
-  - [Client](#client)
-- [Library](#library)
-  - [Library Usage](#library-usage)
-
-<!-- TABLE_OF_CONTENTS_END -->
-
+**[Documentation]**
 # Usage
 
 ## Setup