Adds Oct capability days

Author: aturner-epcc

docs/user-guide/scheduler.md

@@ -2367,7 +2367,9 @@ Your request will be checked by the ARCHER2 User Administration team and, if app
 ## Capability Days
 
 !!! important
-    Dates for the next Capability Days session have not yet been confirmed. 
+    The next Capability Days session will be from Tue 7 Oct 2025 to Thu 9 Oct 2025:
+    - `pre-capabilityday` QoS: 0900-1900, Tue 7 Oct 2025
+    - `capabilityday` QoS: 0800 Wed 8 Oct - 1400 Thu 9 Oct 2025
 
 ARCHER2 Capability Days are a mechanism to allow users to run large scale (512 node or more) tests
 on the system free of charge. The motivations behind Capability Days are:
@@ -2387,10 +2389,6 @@ Capability Days are made up of different parts:
 !!! tip
     Any jobs left in the queues when Capability Days finish will be deleted.
 
-!!! tip
-    If there is no work in the Capability Days QoS for a period of 6 hours, the session will
-    automatically be cancelled and the nodes returned to general service.
-
 ### pre-Capability Day session
 
 The pre-Capability Day session is typically available directly before the full Capability Day session and allows