phpcs fix

Author: arodu

src/Loader/AuthenticationServiceLoader.php

@@ -61,7 +61,7 @@ protected function loadIdentifiers($service)
             '15.2.0',
             'Configuring identifiers globally via `Auth.Identifiers` is deprecated. ' .
                 'Please move each identifier\'s configuration into the `identifier` key within its specific authenticator under `Auth.Authenticators`. ' .
-                'For example, the `Auth.Identifiers.Password` configuration should now be placed inside `Auth.Authenticators.Form.identifier`.'
+                'For example, the `Auth.Identifiers.Password` configuration should now be placed inside `Auth.Authenticators.Form.identifier`.',
         );
 
         foreach ($identifiers as $key => $item) {