Enhancement: Enable whitespace_after_comma_in_array fixer

Author: localheinz

.php-cs-fixer.php

@@ -11,6 +11,7 @@
 
 $config->setRules([
     'no_trailing_whitespace' => true,
+    'whitespace_after_comma_in_array' => true,
 ]);
 
 return $config;