minor #18369 [PHPUnitBridge] Fix missing backtick (alexandre-daubois)

This PR was merged into the 6.2 branch.

Discussion
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[PHPUnitBridge] Fix missing backtick

Commits
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67b3c69 [PhpUnitBridge] Fix missing backtick

Author: javiereguiluz

components/phpunit_bridge.rst

@@ -530,7 +530,7 @@ Clock Mocking
 
 The :class:`Symfony\\Bridge\\PhpUnit\\ClockMock` class provided by this bridge
 allows you to mock the PHP's built-in time functions ``time()``, ``microtime()``,
-``sleep()``, ``usleep()``, ``gmdate()``, and ``hrtime()`. Additionally the
+``sleep()``, ``usleep()``, ``gmdate()``, and ``hrtime()``. Additionally the
 function ``date()`` is mocked so it uses the mocked time if no timestamp is
 specified.