Latest URL for phpunit.xml documentation

Author: johnkary

phpunit.xml.dist

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<!-- http://www.phpunit.de/manual/current/en/appendixes.configuration.html -->
+<!-- https://phpunit.readthedocs.io/en/stable/configuration.html -->
 <phpunit
     xmlns:xsi                     = "http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation = "vendor/phpunit/phpunit/phpunit.xsd"