[Notifier] Add SmsMessage can have from documentation

Author: alamirault

notifier/texters.rst

@@ -24,7 +24,7 @@ you to send SMS messages::
                 '+1411111111',
                 // the message
                 'A new login was detected!',
-                // optionally, you can override default "from" in transports, it can also be a name
+                // optionally, you can override default "from" defined in transports, it can also be a name
                 '+1422222222',
             );