Merge branch '4.4' into 5.4

* 4.4:
  Update testing.rst

Author: javiereguiluz

testing.rst

@@ -99,7 +99,7 @@ You can run tests using the ``./vendor/bin/phpunit`` command:
 .. tip::
 
     In large test suites, it can make sense to create subdirectories for
-    each type of tests (e.g. ``tests/Unit/`` and ``test/Functional/``).
+    each type of tests (e.g. ``tests/Unit/`` and ``tests/Functional/``).
 
 .. _integration-tests: