Update docs/configuring-playbook-client-element-web.md: add an instruction about the section on disabling Element Web

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

docs/configuring-playbook-client-element-web.md

@@ -2,6 +2,8 @@
 
 By default, this playbook installs the [Element Web](https://github.com/element-hq/element-web) Matrix client for you. If that's okay, you can skip this document.
 
+If you'd like to stop the playbook installing the client, see the section [below](#disabling-element-web) to check the configuration for disabling it.
+
 💡 **Note**: the latest version of Element Web is also available on the web, hosted by 3rd parties. If you trust giving your credentials to the following 3rd party Single Page Applications, you can consider using it from there and avoiding the (small) overhead of self-hosting (by [disabling Element Web](#disabling-element-web)):
 
 - [app.element.io](https://app.element.io/), hosted by [Element](https://element.io/)