minor #17622 [Translation] Translatable parameters (alamirault)

This PR was merged into the 6.1 branch.

Discussion
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[Translation] Translatable parameters

Complete #16299

IMO an example is not needed, WDYT ?

Commits
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e4f3016 [Translation] Translatable parameters

Author: javiereguiluz

translation.rst

@@ -345,6 +345,10 @@ Templates are now much simpler because you can pass translatable objects to the
     <h1>{{ message|trans }}</h1>
     <p>{{ status|trans }}</p>
 
+.. tip::
+
+    The translation parameters can also be a :class:`Symfony\\Component\\Translation\\TranslatableMessage`.
+
 .. tip::
 
     There's also a :ref:`function called t() <reference-twig-function-t>`,