Minor reword

Author: javiereguiluz

components/serializer.rst

@@ -1304,23 +1304,22 @@ the :class:`Symfony\\Component\\Serializer\\Serializer` class will call the
 (or :method:`Symfony\\Component\\Serializer\\Normalizer\\DenormalizerInterface::supportsDenormalization`)
 of all registered normalizers (or denormalizers) in a loop.
 
-The result of these methods can vary depending of the value of the object to serialize, of the format to
-use, and of the context. Consequently, **it is not cached** by default.
-
-Because they are called recursively, these methods are usually a huge performance bottleneck. Moreover, most
-normalizers (and denormalizers) always return the same result when the object's type, and the format are
-the same.
-
-To hint the serializer that it's safe to cache the result of these methods (and then dramatically improve the
-overall performance), such normalizers (and denormalizers) should implement the
-:class:`Symfony\\Component\\Serializer\\Normalizer\\CacheableSupportsMethodInterface` and return ``true`` when
+The result of these methods can vary depending on the object to serialize, the
+format and the context. That's why the result **is not cached** by default and
+can result in a significant performance bottleneck.
+
+However, most normalizers (and denormalizers) always return the same result when
+the object's type and the format are the same, so the result can be cached. To
+do so, make those normalizers (and denormalizers) implement the
+:class:`Symfony\\Component\\Serializer\\Normalizer\\CacheableSupportsMethodInterface`
+and return ``true`` when
 :method:`Symfony\\Component\\Serializer\\Normalizer\\CacheableSupportsMethodInterface::hasCacheableSupportsMethod`
 is called.
 
-.. note::
-
-    Built-in :ref:`normalizers and denormalizers <component-serializer-normalizers>`, as well the ones
-    included in `API Platform`_ natively implement this interface.
+ .. note::
+    
+    All built-in :ref:`normalizers and denormalizers <component-serializer-normalizers>`
+    as well the ones included in `API Platform`_ natively implement this interface.
 
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