Added table of contents

README.md

@@ -1,6 +1,19 @@
 DynDNS Helper
 =============
 
+- [DynDNS Helper](#dyndns-helper)
+- [TODO](#todo)
+- [Router DynDNS Examples](#router-dyndns-examples)
+  - [AVM Fritzbox](#avm-fritzbox)
+- [IPv6 LAN Prefix \& Interface ID (IID)](#ipv6-lan-prefix--interface-id-iid)
+  - [Caveats](#caveats)
+- [Configuration](#configuration)
+  - [Server](#server)
+  - [Vendors](#vendors)
+    - [Hetzner](#hetzner)
+  - [FQDNs](#fqdns)
+
+
 Self-hosted python web application based on [FastAPI](https://github.com/tiangolo/fastapi) to update DNS records via API.
 
 Vendor backends are easily extensible and include currently:
@@ -151,7 +164,7 @@ Additional options for Hetzner:
 | api_url | 'https://dns.hetzner.com/api/v1' | false | Hetzner DNS API URL | |
 | api_token | | true | default TTL to set for created records - if not defined in individual FQDN settings | 'secretapitoken' |
 
-# FQDNs
+## FQDNs
 All FQDN config is defined under a key `fqdns` and the FQDN as a key, e.g.:
 ```json
 {