Edit warning on SensitiveCloud's index page

CODEOWNERS

+topics/compute/sensitive/docs @CESNET/sensitivecloud
\ No newline at end of file

topics/compute/sensitive/docs/index.md

@@ -7,11 +7,9 @@ authors:
   - matejantol
 ---
 
-!!! warning "Planned changes to the SensitiveCloud service"
+!!! warning "The log-in method to the SensitiveCloud service has been changed"
 
-    We would like to inform you that on February 26th, 2023 at 5 p.m. (UTC+1), SensitiveCloud service will be undergoing scheduled maintenance to change the login method from MUNI IDP to e-INFRA CZ IDP.
-
-    The expected downtime should not exceed one hour, during which the Rancher portal login will be temporarily unavailable. We apologize for any inconvenience this may cause and assure you that we will work diligently to ensure a swift and seamless transition.
+    On February 26th, 2023, the SensitiveCloud's login method has been changed from the MUNI Login to e-INFRA CZ Login.
 
     [Read more how it affects users and security][migration]