Merge #3206

3206: Fix typo in setup r=mergify[bot] a=strugee

## What type of PR?

Documentation

## What does this PR do?

Fix typo; see diff

### Related issue(s)

N/A

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [x] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: AJ Jordan <[email protected]>

setup/templates/steps/compose/03_expose.html

@@ -49,7 +49,7 @@
  <p><span class="label label-danger">Read this:</span> Mailu requires a <b>validating, DNSSEC-enabled</b> DNS resolver</b> to function. Be sure to read our <a href="https://mailu.io/{{ version }}/faq.html#the-admin-container-won-t-start-and-its-log-says-critical-your-dns-resolver-isn-t-doing-dnssec-validation">FAQ entry</a> on the topic.</p>
 </div>
 
-<p>You server will be available under a main hostname but may expose multiple public
+<p>Your server will be available under a main hostname but may expose multiple public
 hostnames. Every e-mail domain that points to this server must have one of the
 hostnames in its <code>MX</code> record. Hostnames must be comma-separated. If you're having
 trouble accessing your admin interface, make sure it is the first entry here (and possibly the