[TASK] update devise table of contents

Author: Nils Henning

docs/guides/1200-devise/README.md

@@ -4,15 +4,11 @@ Devise is one of the most popular gems for authentication. Find out more about D
 
 In order to integrate it fully in matestack apps and pages we need to adjust a few things. This guide explains what exactly needs to be adjusted.
 
-## Table of contents
-
-- [Integrating Devise](#integrating-devise)
-  - [Table of contents](#table-of-contents)
-  - [Setting up Devise](#setting-up-devise)
-  - [Devise models](#devise-models)
-  - [Devise helpers](#devise-helpers)
-  - [Devise sign in](#devise-sign-in)
-  - [Devise sign out](#devise-sign-out)
+1. [Setting up Devise](#setting-up-devise)
+2. [Devise models](#devise-models)
+3. [Devise helpers](#devise-helpers)
+4. [Devise sign in](#devise-sign-in)
+5. [Devise sign out](#devise-sign-out)
 
 ## Setting up Devise