Tweaks

Author: javiereguiluz

testing/end_to_end.rst

@@ -76,13 +76,17 @@ When using the extension in conjunction with the ``PANTHER_ERROR_SCREENSHOT_DIR`
 environment variable, tests using the Panther client that fail or error (after the
 client is created) will automatically get a screenshot taken to help debugging.
 
-To register the Panther extension, add the following lines to ``phpunit.xml.dist``:
+To register the Panther extension, add the following lines to ``phpunit.dist.xml``
+(in legacy PHPUnit versions older than 10, the file is named ``phpunit.xml.dist``):
 
 .. code-block:: xml
 
     <!-- phpunit.dist.xml -->
     <extensions>
+        <!-- use this with PHPUnit 10 or newer -->
         <bootstrap class="Symfony\Component\Panther\ServerExtension"/>
+        <!-- use this with legacy PHPUnit versions older than 10 -->
+        <extension class="Symfony\Component\Panther\ServerExtension"/>
     </extensions>
 
 Without the extension, the web server used by Panther to serve the application