Update README to use HTML align attribute for centering content

- Replaced inline CSS style for text alignment with the HTML align attribute for better semantic structure.
- This change improves the readability and maintainability of the README file while ensuring consistent presentation across different platforms.

Author: jaydrogers

README.md

@@ -1,7 +1,7 @@
-<p style="text-align: center">
+<p align="center">
 		<img src="https://raw.githubusercontent.com/serversideup/docker-certbot-dns-cloudflare/main/.github/header.png" width="1200" alt="Docker Images Logo">
 </p>
-<p style="text-align: center">
+<p align="center">
 	<a href="https://github.com/serversideup/docker-certbot-dns-cloudflare/actions/workflows/publish_docker-images-production.yml"><img alt="Build Status" src="https://img.shields.io/github/actions/workflow/status/serversideup/docker-certbot-dns-cloudflare/.github%2Fworkflows%2Fpublish_docker-images-production.yml" /></a>
 	<a href="https://github.com/serversideup/docker-certbot-dns-cloudflare/blob/main/LICENSE" target="_blank"><img src="https://badgen.net/github/license/serversideup/docker-certbot-dns-cloudflare" alt="License"></a>
 	<a href="https://github.com/sponsors/serversideup"><img src="https://badgen.net/badge/icon/Support%20Us?label=GitHub%20Sponsors&color=orange" alt="Support us"></a>