Update email.asciidoc: Remove reference to Elastic Cloud email allowl…

…ist. (#153854)

Removes the warning about the email allowlist in Elastic Cloud from the docs.

It is not necessary anymore to allowlist individual email addresses in Elastic Cloud. The connector can now be used immediately without any additional config.

Instead I added a link to the list of limitations for the Elastic Cloud connector (rate-limit etc.)

docs/management/connectors/action-types/email.asciidoc

@@ -234,14 +234,12 @@ is considered `false`.  Typically, `port: 465` uses `secure: true`, and
 [float]
 [[elasticcloud]]
 ==== Sending email from Elastic Cloud
-
-IMPORTANT: To receive notifications, the email addresses must be added to an
-    link:{cloud}/ec-watcher.html#ec-watcher-allowlist[allowlist] in the 
-    Elasticsearch Service Console.
 
 Use the preconfigured email connector (`Elastic-Cloud-SMTP`) to send emails from 
 Elastic Cloud.
 
+NOTE: For more information on the preconfigured email connector, see link:{cloud}/ec-watcher.html#ec-cloud-email-service-limits[Elastic Cloud email service limits].
+
 [float]
 [[gmail]]
 ==== Sending email from Gmail