Update mail config instructions

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
diff --git a/source/mail.rst b/source/mail.rst
index 7a1299e..0b43e0a 100644
--- a/source/mail.rst
+++ b/source/mail.rst
@@ -33,7 +33,7 @@
                 smtpserver     = mail.kernel.org
                 smtpserverport = 465
                 smtpencryption = ssl
-                from           = [username]@kernel.org
+                from           = Your Name <[username]@kernel.org>
                 smtpuser       = [username]
                 smtppass       = [randomstring]