Blank line after directive and no blank line after filepath

Author: OskarStark

mailer.rst

@@ -2,6 +2,7 @@ Sending Emails with Mailer
 ==========================
 
 .. versionadded:: 4.3
+
     The Mailer component was added in Symfony 4.3 and is currently experimental.
     The previous solution - Swift Mailer - is still valid: :doc:`Swift Mailer</email>`.
 
@@ -62,7 +63,6 @@ You'll now have a new line in your ``.env`` file that you can uncomment:
 .. code-block:: bash
 
     # .env
-
     SENDGRID_KEY=
     MAILER_DSN=smtp://$SENDGRID_KEY@sendgrid