minor #12160 Use vaild ref for link to the heading (OskarStark)

This PR was merged into the 4.3 branch.

Discussion
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Use vaild ref for link to the heading

Closes #12129

Commits
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5c8da7c Use vaild ref for link to the heading

Author: javiereguiluz

translation.rst

@@ -169,7 +169,7 @@ For information on where these files should be located, see
 
 Now, if the language of the user's locale is French (e.g. ``fr_FR`` or ``fr_BE``),
 the message will be translated into ``J'aime Symfony``. You can also translate
-the message inside your `templates <Translations in Templates>`.
+the message inside your :ref:`templates <translation-in-templates>`.
 
 The Translation Process
 ~~~~~~~~~~~~~~~~~~~~~~~
@@ -222,6 +222,8 @@ using PHP's :phpclass:`MessageFormatter` class. Read more about this in
    pluralization was managed by the
    :method:`Symfony\\Component\\Translation\\Translator::transChoice` method.
 
+.. _translation-in-templates:
+
 Translations in Templates
 -------------------------