minor symfony#7626 [Serializer] By default the serializer do not convert to lower case properties (lyrixx, javiereguiluz)

This PR was submitted for the 2.8 branch but it was merged into the 2.7 branch instead (closes symfony#7626).

Discussion
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[Serializer] By default the serializer do not convert to lower case properties

Commits
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16cad92 Minor reword
b384cc2 [Serializer] Added missing ObjectNormalizer
f7ebf56 [Serializer] By default the serializer do not convert to lower case properties

Author: javiereguiluz

components/serializer.rst

@@ -510,9 +510,10 @@ There are several types of normalizers available:
     directly and through getters, setters, hassers, adders and removers. It supports
     calling the constructor during the denormalization process.
 
-    Objects are normalized to a map of property names (method name stripped of
-    the "get"/"set"/"has"/"remove" prefix and converted to lower case) to property
-    values.
+    Objects are normalized to a map of property names and values (names are
+    generated removing the ``get``, ``set``, ``has`` or ``remove`` prefix from
+    the method name and lowercasing the first letter; e.g. ``getFirstName()`` ->
+    ``firstName``).
 
     The ``ObjectNormalizer`` is the most powerful normalizer. It is configured by
     default when using the Symfony Standard Edition with the serializer enabled.
@@ -522,8 +523,9 @@ There are several types of normalizers available:
     (public methods starting with "get"). It will denormalize data by calling
     the constructor and the "setters" (public methods starting with "set").
 
-    Objects are normalized to a map of property names (method name stripped of
-    the "get" prefix and converted to lower case) to property values.
+    Objects are normalized to a map of property names and values (names are
+    generated removing the ``get`` prefix from the method name and lowercasing
+    the first letter; e.g. ``getFirstName()`` -> ``firstName``).
 
 :class:`Symfony\\Component\\Serializer\\Normalizer\\PropertyNormalizer`
     This normalizer directly reads and writes public properties as well as
@@ -602,7 +604,8 @@ Circular references are common when dealing with entity relations::
     }
 
 To avoid infinite loops, :class:`Symfony\\Component\\Serializer\\Normalizer\\GetSetMethodNormalizer`
-throws a :class:`Symfony\\Component\\Serializer\\Exception\\CircularReferenceException`
+or :class:`Symfony\\Component\\Serializer\\Normalizer\\ObjectNormalizer`
+throw a :class:`Symfony\\Component\\Serializer\\Exception\\CircularReferenceException`
 when such a case is encountered::
 
     $member = new Member();