Merge branch '4.4'

* 4.4:
  [TwigBridge] Documented the new lint:twig behavior when passing no arguments
  [Mailer] Change DSN syntax

Author: javiereguiluz

components/mailer.rst

@@ -98,20 +98,28 @@ binary. For third-party providers, refers to the following table:
 Failover Transport
 ------------------
 
-You can create failover transport with the help of `||` operator::
+You can create failover transport with the help of ``failover()`` keyword::
 
-    $dsn = 'api://id@postmark || smtp://key@sendgrid';
+    $dsn = 'failover(api://id@postmark smtp://key@sendgrid)';
 
 So if the first transport fails, the mailer will attempt to send through the
 second transport.
 
+.. versionadded:: 4.4
+
+    The ``failover()`` keyword was introduced in Symfony 4.4.
+
 Round Robin
 -----------
 
 If you want to send emails by using multiple transports in a round-robin fashion,
-you can use the ``&&`` operator between the transports::
+you can use the ``roundrobin()`` keyword with the transports::
+
+    $dsn = 'roundrobin(api://id@postmark smtp://key@sendgrid)'
+
+.. versionadded:: 4.4
 
-    $dsn = 'api://id@postmark && smtp://key@sendgrid'
+    The ``roundrobin()`` keyword was introduced in Symfony 4.4.
 
 Sending emails asynchronously
 -----------------------------

templates.rst

@@ -563,12 +563,18 @@ errors. It's useful to run it before deploying your application to production
 
 .. code-block:: terminal
 
-    # check all the templates stored in a directory
-    $ php bin/console lint:twig templates/
+    # check all the application templates
+    $ php bin/console lint:twig
 
-    # you can also check individual templates
+    # you can also check directories and individual templates
+    $ php bin/console lint:twig templates/email/
     $ php bin/console lint:twig templates/article/recent_list.html.twig
 
+.. versionadded:: 4.4
+
+    The feature that checks all the application templates when not passing any
+    arguments to ``lint:twig`` was introduced in Symfony 4.4.
+
 Inspecting Twig Information
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~