Do not list feature overview twice (#9361)

* Re-organize TOC to avoid "Feature Overview" twice with different overviews

* Rename Feature Overview to Main Features

* Re-order manual TOC

Co-authored-by: Eric Holscher <[email protected]>

Author: benjaoming

docs/user/features.rst

@@ -1,5 +1,5 @@
-Feature Overview
-================
+Main Features
+=============
 
 Read the Docs offers a number of platform features that are possible because we both build and host documentation for you.
 

docs/user/index.rst

@@ -47,7 +47,6 @@ to help you create fantastic documentation for your project.
 * **Getting started**:
   :doc:`With Sphinx </intro/getting-started-with-sphinx>` |
   :doc:`With MkDocs </intro/getting-started-with-mkdocs>` |
-  :doc:`Feature Overview </features>` |
   :doc:`/choosing-a-site`
 
 * **Importing your existing documentation**:
@@ -64,7 +63,6 @@ to help you create fantastic documentation for your project.
    /intro/getting-started-with-mkdocs
 
    /intro/import-guide
-   /features
    /choosing-a-site
 
 
@@ -75,6 +73,7 @@ Learn more about configuring your automated documentation builds
 and some of the core features of Read the Docs.
 
 * **Overview of core features**:
+  :doc:`/features` |
   :doc:`/integrations` |
   :doc:`/custom-domains` |
   :doc:`/versions` |
@@ -104,8 +103,9 @@ and some of the core features of Read the Docs.
 .. toctree::
    :maxdepth: 1
    :hidden:
-   :caption: Feature Overview
+   :caption: Features
 
+   /features
    /config-file/index
    /integrations
    /custom-domains