README.md in shakapacker-6.0.1 vs README.md in shakapacker-6.0.2

- old
+ new

@@ -30,12 +30,10 @@
 
 - [Prerequisites](#prerequisites)
 - [Features](#features)
   - [Optional support](#optional-support)
 - [Installation](#installation)
-  - [Rails v6](#rails-v6)
-  - [Rails v7](#rails-v7)
-  - [Manual Installation Steps](#manual-installation-steps)
+  - [Rails v6+](#rails-v6)
   - [Note for Sprockets usage](#note-for-sprockets-usage)
 - [Usage](#usage)
   - [View Helpers](#view-helpers)
   - [Defer for `javascript_pack_tag`](#defer-for-javascript_pack_tag)
   - [Server-Side Rendering (SSR)](#server-side-rendering-ssr)