minor #13917 Update serializer.rst (atailouloute)

This PR was merged into the 3.4 branch.

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Update serializer.rst

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4bc6745 Update serializer.rst

Author: javiereguiluz

components/serializer.rst

@@ -586,7 +586,7 @@ There are several types of normalizers available:
     calling the constructor during the denormalization process.
 
     Objects are normalized to a map of property names and values (names are
-    generated removing the ``get``, ``set``, ``has``, ``is``, ``add`` or ``remove`` prefix from
+    generated by removing the ``get``, ``set``, ``has``, ``is``, ``add`` or ``remove`` prefix from
     the method name and transforming the first letter to lowercase; e.g.
     ``getFirstName()`` -> ``firstName``).
 
@@ -599,7 +599,7 @@ There are several types of normalizers available:
     the constructor and the "setters" (public methods starting with "set").
 
     Objects are normalized to a map of property names and values (names are
-    generated removing the ``get`` prefix from the method name and transforming
+    generated by removing the ``get`` prefix from the method name and transforming
     the first letter to lowercase; e.g. ``getFirstName()`` -> ``firstName``).
 
 :class:`Symfony\\Component\\Serializer\\Normalizer\\PropertyNormalizer`