feat: enhance download command with success and warning messages; update Authentik documentation for clarity

documentation/docs/configuration/social_auth/authentik.md

@@ -18,6 +18,7 @@ To enable Authentik as an identity provider, the administrator must first config
 4. Set the `Redirect URI` of type `Regex` to `^http://<adventurelog-server-url>/accounts/oidc/.*$` where `<adventurelog-url>` is the URL of your AdventureLog Server service.
 5. Copy the `Client ID` and `Client Secret` generated by Authentik, you will need these to configure AdventureLog.
 6. Create an application in Authentik and assign the provider to it, name the `slug` `adventurelog` or any other name you prefer.
+7. If you want the logo, you can find it [here](https://adventurelog.app/adventurelog.png).
 
 ### AdventureLog Configuration
 
@@ -41,7 +42,10 @@ This configuration is done in the [Admin Panel](../../guides/admin_panel.md). Yo
    }
    ```
 
-   - Sites: move over the sites you want to enable Authentik on, usually `example.com` and `www.example.com` unless you renamed your sites.
+   ::: warning
+   `localhost` is most likely not a valid `server_url` for Authentik in this instance because `localhost` is the server running AdventureLog, not Authentik. You should use the IP address of the server running Authentik or the domain name if you have one.
+
+- Sites: move over the sites you want to enable Authentik on, usually `example.com` and `www.example.com` unless you renamed your sites.
 
 #### What it Should Look Like