Update injection_types.rst

components/serializer.rst

@@ -700,7 +700,7 @@ 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``).
 
@@ -713,7 +713,7 @@ 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`

service_container/injection_types.rst

@@ -222,6 +222,9 @@ that accepts the dependency::
     {
         private $mailer;
 
+        /**
+         * @required
+         */
         public function setMailer(MailerInterface $mailer)
         {
             $this->mailer = $mailer;