docs: update end of life dates for PHP

Author: kenjis

README.md

@@ -92,10 +92,11 @@ PHP version 7.4 or higher is required, with the following extensions installed:
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)
 
-> **Warning**
-> The end of life date for PHP 7.4 was November 28, 2022. If you are
-> still using PHP 7.4, you should upgrade immediately. The end of life date
-> for PHP 8.0 will be November 26, 2023.
+> [!WARNING]
+> The end of life date for PHP 7.4 was November 28, 2022.
+> The end of life date for PHP 8.0 was November 26, 2023.
+> If you are still using PHP 7.4 or 8.0, you should upgrade immediately.
+> The end of life date for PHP 8.1 will be November 25, 2024.
 
 Additionally, make sure that the following extensions are enabled in your PHP:
 

admin/framework/README.md

@@ -47,10 +47,11 @@ PHP version 7.4 or higher is required, with the following extensions installed:
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)
 
-> **Warning**
-> The end of life date for PHP 7.4 was November 28, 2022. If you are
-> still using PHP 7.4, you should upgrade immediately. The end of life date
-> for PHP 8.0 will be November 26, 2023.
+> [!WARNING]
+> The end of life date for PHP 7.4 was November 28, 2022.
+> The end of life date for PHP 8.0 was November 26, 2023.
+> If you are still using PHP 7.4 or 8.0, you should upgrade immediately.
+> The end of life date for PHP 8.1 will be November 25, 2024.
 
 Additionally, make sure that the following extensions are enabled in your PHP:
 

admin/starter/README.md

@@ -55,10 +55,11 @@ PHP version 7.4 or higher is required, with the following extensions installed:
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)
 
-> **Warning**
-> The end of life date for PHP 7.4 was November 28, 2022. If you are
-> still using PHP 7.4, you should upgrade immediately. The end of life date
-> for PHP 8.0 will be November 26, 2023.
+> [!WARNING]
+> The end of life date for PHP 7.4 was November 28, 2022.
+> The end of life date for PHP 8.0 was November 26, 2023.
+> If you are still using PHP 7.4 or 8.0, you should upgrade immediately.
+> The end of life date for PHP 8.1 will be November 25, 2024.
 
 Additionally, make sure that the following extensions are enabled in your PHP: