[Uid] Add documentation for MockUuidFactory usage in tests

Author: momito69

components/uid.rst

@@ -437,9 +437,10 @@ MockUuidFactory
 ===============
 
 .. versionadded:: 7.4
-    The :class:`Symfony\Component\Uid\Factory\MockUuidFactory` class was introduced in Symfony 7.4.
 
-The :class:`Symfony\Component\Uid\Factory\MockUuidFactory` class allows you to control the UUIDs generated during your tests, making them predictable and reproducible.
+    The :class:`Symfony\\Component\\Uid\\Factory\\MockUuidFactory` class was introduced in Symfony 7.4.
+
+The :class:`Symfony\\Component\\Uid\\Factory\\MockUuidFactory` class allows you to control the UUIDs generated during your tests, making them predictable and reproducible.
 
 Suppose you have a service that generates a UUID for each new user: