Include handbook link for requirements

Co-Authored-By: Javier Casares <[email protected]>

Author: desrosj

README.md

@@ -90,7 +90,7 @@ ssh wpt
 
 ## Requirements
 
-To use the Runner, the following is required (testing WordPress 6.7-alpha):
+To use the Runner, the following is required to test WordPress version 6.6 or later:
 
 - Server / hosting (infrastructure) with the usual configuration you use
 - A database where you can test (tables will be created and destroyed several times)
@@ -100,6 +100,8 @@ To use the Runner, the following is required (testing WordPress 6.7-alpha):
 - PHP Composer
 - Git, RSync, WGet, UnZip
 
+A full list of compatible versions of PHP for each version of WordPress [can be found in the WordPress Core Handbook](https://make.wordpress.org/core/handbook/references/php-compatibility-and-wordpress-versions/).
+
 Test environment:
 
 - Writable filesystem for the entire test directory (see [#40910](https://core.trac.wordpress.org/ticket/40910)).