Edit README.md: user identifier example

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

README.md

@@ -6,7 +6,7 @@
 
 This [Ansible](https://www.ansible.com/) playbook is meant to help you run your own [Matrix](http://matrix.org/) homeserver, along with the [various services](#supported-services) related to that.
 
-That is, it lets you join the Matrix network using your own `@alice:example.com` identifier, all hosted on your own server (see [prerequisites](docs/prerequisites.md)).
+That is, it lets you join the Matrix network using your own user identifier like `@alice:example.com`, all hosted on your own server (see [prerequisites](docs/prerequisites.md)).
 
 We run all [supported services](#-supported-services) in [Docker](https://www.docker.com/) containers (see [the container images we use](docs/container-images.md)), which lets us have a predictable and up-to-date setup, across multiple supported distros (see [prerequisites](docs/prerequisites.md)) and [architectures](docs/alternative-architectures.md) (x86/amd64 being recommended).