minor symfony#11544 Fix: make class clickable (weaverryan, Art4)

This PR was merged into the 3.4 branch.

Discussion
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Fix: make class clickable

Small fix that makes the `Symfony\Component\Serializer\Normalizer\NormalizableInterface` class clickable to see the api.

This affects the maintained branches 3.4, 4.2 and master.

Commits
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237f45c make class clickable
c9c8f0a Fixing build

Author: javiereguiluz

serializer/normalizers.rst

@@ -28,7 +28,7 @@ Symfony includes the following normalizers but you can also
   normalize PHP object using the :doc:`PropertyAccessor component </components/property_access>`;
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\CustomNormalizer` to
   normalize PHP object using an object that implements
-  ``:class:`Symfony\\Component\\Serializer\\Normalizer\\NormalizableInterface``;
+  :class:`Symfony\\Component\\Serializer\\Normalizer\\NormalizableInterface`;
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\GetSetMethodNormalizer` to
   normalize PHP object using the getter and setter methods of the object;
 * :class:`Symfony\\Component\\Serializer\\Normalizer\\PropertyNormalizer` to