minor #20787 [TypeInfo] Refer TypeFactoryTrait to file (MrYamous)

This PR was merged into the 7.2 branch.

Discussion
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[TypeInfo] Refer ``TypeFactoryTrait`` to file

IMO it's easier to access the class this way but `:class:` is not available in codeblock
Did I miss any particular reason to mention it in comment ?

Commits
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005ad02 refer TypeFactoryTrait to github file

Author: javiereguiluz

components/type_info.rst

@@ -37,8 +37,8 @@ to the :class:`Symfony\\Component\\TypeInfo\\Type` static methods as following::
     Type::list(Type::bool());
     Type::intersection(Type::object(\Stringable::class), Type::object(\Iterator::class));
 
-    // Many others are available and can be
-    // found in Symfony\Component\TypeInfo\TypeFactoryTrait
+Many others methods are available and can be found
+in :class:`Symfony\\Component\\TypeInfo\\TypeFactoryTrait`.
 
 Resolvers
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