Update docs/configuring-playbook-jitsi.md: remove the instructions for adjusting the URL in favor of the role's document at the MASH project

The document is available at af5b04fc32/docs/configuring-jitsi.md

- Add an anchor link to the section for setting the hostname on the role's document

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-jitsi.md

@@ -60,20 +60,7 @@ As the most of the necessary settings for the role have been taken care of by th
 
 However, **since Jitsi's performance heavily depends on server resource (bandwidth, RAM, and CPU), it is recommended to review settings and optimize them as necessary before deployment.** You can check [here](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#example-configurations) for an example set of configurations to set up a Jitsi instance, focusing on performance. If you will host a large conference, you probably might also want to consider to provision additional JVBs ([Jitsi VideoBridge](https://github.com/jitsi/jitsi-videobridge)). See [here](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#set-up-additional-jvbs-for-more-video-conferences-optional) for details about setting them up with the playbook.
 
-See the role's document for details about configuring Jitsi per your preference (such as [authentication and guests mode](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#configure-jitsi-authentication-and-guests-mode-optional) and [the environment variable for running Jitsi in a LAN](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#configure-jvb_advertise_ips-for-running-behind-nat-or-on-a-lan-environment-optional)).
-
-### Adjusting the Jitsi URL (optional)
-
-By tweaking the `jitsi_hostname` variable, you can easily make the service available at a **different hostname** than the default one.
-
-Example additional configuration for your `vars.yml` file:
-
-```yaml
-# Change the default hostname
-jitsi_hostname: call.example.com
-```
-
-After changing the domain, **you may need to adjust your DNS** records to point the Jitsi domain to the Matrix server.
+See the role's document for details about configuring Jitsi per your preference (such as setting [a custom hostname](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#set-the-hostname), [authentication and guests mode](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#configure-jitsi-authentication-and-guests-mode-optional), and [the environment variable for running Jitsi in a LAN](https://github.com/mother-of-all-self-hosting/ansible-role-jitsi/blob/main/docs/configuring-jitsi.md#configure-jvb_advertise_ips-for-running-behind-nat-or-on-a-lan-environment-optional)).
 
 ### Configure Jitsi authentication and guests mode (optional)