Merge branch '4.4' into 5.0

* 4.4:
  Update mailer.rst
  Add versionadded in file
  Add documentation for exponential format number

Author: OskarStark

components/expression_language/syntax.rst

@@ -19,6 +19,11 @@ The component supports:
 * **hashes** - using JSON-like notation (e.g. ``{ foo: 'bar' }``)
 * **booleans** - ``true`` and ``false``
 * **null** - ``null``
+* **exponential** - also known as scientific (e.g. ``1.99E+3`` or ``1e-2``)
+
+    .. versionadded:: 4.4
+    
+        The ``exponential`` literal was introduced in Symfony 4.4.
 
 .. caution::
 

components/mailer.rst

@@ -60,10 +60,10 @@ it:
 
 Then, use the SMTP Gmail transport::
 
-    use Symfony\Component\Mailer\Bridge\Google\Smtp\GmailTransport;
+    use Symfony\Component\Mailer\Bridge\Google\Transport\GmailSmtpTransport;
     use Symfony\Component\Mailer\Mailer;
 
-    $transport = new GmailTransport('user', 'pass');
+    $transport = new GmailSmtpTransport('user', 'pass');
     $mailer = new Mailer($transport);
     $mailer->send($email);