Merge branch '6.3' into 6.4

* 6.3:
  some tweaks for the Webhook docs
  fix headline

Author: OskarStark

mailer.rst

@@ -291,7 +291,7 @@ party provider:
 
 .. tip::
 
-    Some third party mailers, when using the API, support status callback
+    Some third party mailers, when using the API, support status callbacks
     via webhooks. See the :doc:`Webhook documentation </webhook>` for more
     details.
 

messenger.rst

@@ -904,7 +904,7 @@ running the ``messenger:consume`` command.
 
 .. _messenger-retries-failures:
 
-Rate limited transport
+Rate Limited Transport
 ~~~~~~~~~~~~~~~~~~~~~~
 
 .. versionadded:: 6.2

notifier.rst

@@ -130,7 +130,7 @@ Service             Package                                DSN
 
 .. tip::
 
-    Some third party transports, when using the API, support status callback
+    Some third party transports, when using the API, support status callbacks
     via webhooks. See the :doc:`Webhook documentation </webhook>` for more
     details.
 

webhook.rst

@@ -16,17 +16,17 @@ Installation
 
     $ composer require symfony/webhook
 
-Usage in combination with the Mailer component
+Usage in Combination with the Mailer Component
 ----------------------------------------------
 
 When using a third-party mailer, you can use the Webhook component to receive
 webhook calls from the third-party mailer.
 
-In this example Mailgun is used with ``'mailer_mailgun'`` as webhook type.
-Any type name can be used as long as it's unique. Make sure to use it in the
+In this example Mailgun is used with ``'mailer_mailgun'`` as the webhook type.
+Any type name can be used as long as it is unique. Make sure to use it in the
 routing configuration, the webhook URL and the RemoteEvent consumer.
 
-Install the third party mailer as described in the documentation of the
+Install the third-party mailer as described in the documentation of the
 :ref:`Mailer component <mailer_3rd_party_transport>`.
 
 The Webhook component routing needs to be defined:
@@ -142,13 +142,13 @@ With this done, you can now add a RemoteEvent consumer to react to the webhooks:
         }
     }
 
-Usage in combination with the Notifier component
+Usage in Combination with the Notifier Component
 ------------------------------------------------
 
 The usage of the Webhook component when using a third-party transport in
 the Notifier is very similar to the usage with the Mailer.
 
-Currently, the following third-party sms transports support webhooks:
+Currently, the following third-party SMS transports support webhooks:
 
 ============ ==========================================
 SMS service  Parser service name