add toc with Emacs' markdown-toc package

nfsv4-kerberos-debian.md

@@ -11,6 +11,24 @@ This document will (hopefully) allow you to setup a kerberized NFSv4 server on D
 >
 > SPDX-License-Identifier: [GFDL-1.3-or-later](https://spdx.org/licenses/GFDL-1.3-or-later.html)
 
+<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
+**Table of Contents**
+    - [Introduction](#introduction)
+    - [Pre-requisites](#pre-requisites)
+    - [Kerberos (V5)](#kerberos-v5)
+        - [Naming](#naming)
+        - [Packages installation](#packages-installation)
+        - [Server side](#server-side)
+        - [Client side](#client-side)
+        - [Testing](#testing)
+    - [NFSv4](#nfsv4)
+        - [Server side](#server-side-1)
+        - [Client side](#client-side-1)
+        - [Testing](#testing-1)
+    - [Sources](#sources)
+
+<!-- markdown-toc end -->
+
 
 ## Introduction
 If you share some files between your machines, your choice was probably [SMB/CIFS](https://en.wikipedia.org/wiki/Server_Message_Block),