Add placeholder content for Authelia

docs/user/multi-tenancy.md

@@ -38,7 +38,9 @@ Out of the box, Dashboard will append two piece of information to the `_client`
 
 Plugins, such as the [FlowFuse User Addon](https://flowfuse.com/blog/2024/04/displaying-logged-in-users-on-dashboard/), are available to append additional information to the `_client` object. 
 
-These Authentication plugins can be installed via the Node-RED Palette Manager, and often require Node-RED to be setup with a given Authentication provider, separately from Dashboard. The plugins will append additional information to the `_client` object, such as the `user` object, which details the user's name, email address, and any other information that the Authentication provider has available.
+These Authentication plugins can be installed via the Node-RED Palette Manager, and often require Node-RED to be setup with a given Authentication provider, separately from Dashboard.
+
+The plugins will append additional information to the `_client` object, such as the `user` object, which details the user's name, email address, and any other information that the Authentication provider has available.
 
 #### FlowFuse User Addon
 
@@ -48,6 +50,10 @@ The [FlowFuse User Addon](https://flows.nodered.org/node/@flowfuse/node-red-dash
 
 The [Cloudflare Access](https://flows.nodered.org/node/@fullmetal-fred/node-red-dashboard-2-cloudflare-auth) plugin requires Node-RED to be setup with [Cloudflare Access](https://www.cloudflare.com/en-gb/zero-trust/products/access/), with a Cloudflare tunnel configured for your node-RED instance, and the relevant access policy setup.
 
+#### Authelia Auth
+
+This [Authelia Auth]() plugin adds user data if your Node-RED instance is secured with the open-source authentication server, [Authelia](https://www.authelia.com/).
+
 ## Configuring Client Data
 
 In the [Dashboard sidebar](./sidebar.md#client-data) within the Node-RED Editor, you will find the "Client Data" tab: