minor symfony#21272 [Testing] Updates related to the main PHPUnit configuration file (javiereguiluz)

This PR was merged into the 6.4 branch.

Discussion
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[Testing] Updates related to the main PHPUnit configuration file

After merging symfony#21268 and symfony#21269, I think we should fix the same issues in the rest of the docs.

Commits
-------

2b6d28b Updates related to the main PHPUnit configuration file

Author: javiereguiluz

bundles/best_practices.rst

@@ -188,7 +188,7 @@ the ``tests/`` directory. Tests should follow the following principles:
 .. note::
 
     A test suite must not contain ``AllTests.php`` scripts, but must rely on the
-    existence of a ``phpunit.xml.dist`` file.
+    existence of a ``phpunit.dist.xml`` file.
 
 Continuous Integration
 ----------------------

create_framework/unit_testing.rst

@@ -14,7 +14,7 @@ using `PHPUnit`_. At first, install PHPUnit as a development dependency:
 
     $ composer require --dev phpunit/phpunit:^10.0
 
-Then, create a PHPUnit configuration file in ``example.com/phpunit.xml.dist``:
+Then, create a PHPUnit configuration file in ``example.com/phpunit.dist.xml``:
 
 .. code-block:: xml
 

setup/upgrade_major.rst

@@ -114,7 +114,7 @@ done!
 
     .. code-block:: xml
 
-        <!-- phpunit.xml.dist -->
+        <!-- phpunit.dist.xml -->
         <phpunit>
             <!-- ... -->
 

testing.rst

@@ -55,16 +55,16 @@ This command automatically runs your application tests. Each test is a
 PHP class ending with "Test" (e.g. ``BlogControllerTest``) that lives in
 the ``tests/`` directory of your application.
 
-PHPUnit is configured by the ``phpunit.xml.dist`` file in the root of your
-application. The default configuration provided by Symfony Flex will be
-enough in most cases. Read the `PHPUnit documentation`_ to discover all
-possible configuration options (e.g. to enable code coverage or to split
-your test into multiple "test suites").
+PHPUnit is configured by the ``phpunit.dist.xml`` file in the root of your
+application (in PHPUnit versions older than 10, the file is named ``phpunit.xml.dist``).
+The default configuration provided by Symfony Flex will be enough in most cases.
+Read the `PHPUnit documentation`_ to discover all possible configuration options
+(e.g. to enable code coverage or to split your test into multiple "test suites").
 
 .. note::
 
     :ref:`Symfony Flex <symfony-flex>` automatically creates
-    ``phpunit.xml.dist`` and ``tests/bootstrap.php``. If these files are
+    ``phpunit.dist.xml`` and ``tests/bootstrap.php``. If these files are
     missing, you can try running the recipe again using
     ``composer recipes:install phpunit/phpunit --force -v``.
 
@@ -81,7 +81,7 @@ By convention, the ``tests/`` directory should replicate the directory
 of your application for unit tests. So, if you're testing a class in the
 ``src/Form/`` directory, put the test in the ``tests/Form/`` directory.
 Autoloading is automatically enabled via the ``vendor/autoload.php`` file
-(as configured by default in the ``phpunit.xml.dist`` file).
+(as configured by default in the ``phpunit.dist.xml`` file).
 
 You can run tests using the ``bin/phpunit`` command:
 
@@ -391,7 +391,7 @@ Now, enable it as a PHPUnit extension:
 
 .. code-block:: xml
 
-    <!-- phpunit.xml.dist -->
+    <!-- phpunit.dist.xml -->
     <phpunit>
         <!-- ... -->
 

testing/bootstrap.rst

@@ -35,11 +35,11 @@ You can modify this file to add custom logic:
 .. note::
 
     If you don't use Symfony Flex, make sure this file is configured as
-    bootstrap file in your ``phpunit.xml.dist`` file:
+    bootstrap file in your ``phpunit.dist.xml`` file:
 
     .. code-block:: xml
 
-        <!-- phpunit.xml.dist -->
+        <!-- phpunit.dist.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <phpunit
             bootstrap="tests/bootstrap.php"

testing/end_to_end.rst

@@ -872,12 +872,12 @@ Another option is to create a file called ``tests/router.php`` and add the follo
 
     require $script;
 
-Then declare it as a router for Panther server in ``phpunit.xml.dist`` using the
+Then declare it as a router for Panther server in ``phpunit.dist.xml`` using the
 ``PANTHER_WEB_SERVER_ROUTER`` environment variable:
 
 .. code-block:: xml
 
-    <!-- phpunit.xml.dist -->
+    <!-- phpunit.dist.xml -->
     <phpunit>
         <!-- ... -->
         <php>