Merge branch '5.4' into 6.0

* 5.4:
  Removed redundancy in package requirements

Author: javiereguiluz

testing.rst

@@ -15,9 +15,8 @@ Symfony integrates with an independent library called `PHPUnit`_ to give
 you a rich testing framework. This article won't cover PHPUnit itself,
 which has its own excellent `documentation`_.
 
-Before creating your first test, install ``phpunit/phpunit`` by installing
-``symfony/test-pack``, which also installs some other packages providing useful
-Symfony test utilities:
+Before creating your first test, install ``symfony/test-pack``, which installs
+some other packages needed for testing (such as ``phpunit/phpunit``):
 
 .. code-block:: terminal