Add to changelog.

CHANGELOG-EE

 v 7.3.0
   - Add an option to change the LDAP sync time from default 1 hour
+  - User will receive an email when unsubscribed from admin notifications
 
 v 7.2.0
   - Improve Redmine integration

doc/tools/email.md

@@ -16,5 +16,7 @@ Which will be sent to all users or users of a chosen group or project.
 
 ## Note
 User can choose to unsubscribe from receiving emails from GitLab by following the unsubscribe link from the email.
-Unsubscribing is unauthenticated in order to keep the simplicity of this feature. On usubscribe, user will receive an email notifying that unsubscribe happened.
+Unsubscribing is unauthenticated in order to keep the simplicity of this feature.
+
+On unsubscribe, user will receive an email notifying that unsubscribe happened.
 Endpoint that provides unsubscribe option is protected by request being rate-limited.