Add authentication information to required information for setting up SMTP for AE (#16340)

* Add authentication information

* Add AE versioning back in

Author: lecoursen

content/admin/configuration/configuring-email-for-notifications.md

@@ -18,6 +18,7 @@ Notification emails are sent if there is activity on a repository a user is watc
 Your dedicated technical account manager in {% data variables.contact.github_support %} can configure email for notifications to be sent through your SMTP server. Make sure you include the following details in your support request.
 
 - Your SMTP server address
+- Login information to authenticate to the server: username and password
 - The port your SMTP server uses to send email
 - The domain name that your SMTP server will send with a HELO response, if any
 - The type of encryption used by your SMTP server

data/reusables/notifications/outbound_email_tip.md

@@ -1,9 +1,7 @@
-{% if enterpriseServerVersions contains currentVersion %}
-
+{% if enterpriseServerVersions contains currentVersion or currentVersion == "github-ae@latest" %}
 {% note %}
 
 **Note**: You'll only receive email notifications if outbound email support is enabled on {% data variables.product.product_location %}. For more information, contact your site administrator.
 
 {% endnote %}
-
 {% endif %}