Docs: Added very basic docs about revoking user sessions (#17931)

* Docs: Added very basic docs that mention you can log yourself and other out

* Docs: fixed spelling issue

docs/sources/auth/overview.md

@@ -47,6 +47,13 @@ An active authenticated user that gets it token rotated will extend the `login_m
 This means that a user can close its browser and come back before `now + login_maximum_inactive_lifetime_days` and still being authenticated.
  This is true as long as the time since user login is less than `login_maximum_lifetime_days`.
 
+#### Remote logout
+
+You can logout from other devices by removing login sessions from the bottom of your profile page. If you are
+a Grafana admin user you can also do the same for any user from the Server Admin / Edit User view.
+
+## Settings
+
 Example:
 
 ```bash