Merge pull request #224948 from Nickomang/aks-upgrade-improvements

Added details to planned maintenance

Author: prmerger-automator[bot]

articles/aks/planned-maintenance.md

@@ -87,6 +87,9 @@ An `aksManagedAutoUpgradeSchedule` has the following properties:
 
 There are currently three available schedule types: `Weekly`, `AbsoluteMonthly`, and `RelativeMonthly`. These schedule types are only applicable to `aksManagedClusterAutoUpgrade` configurations.
 
+> [!NOTE]
+> All of the fields shown for each respective schedule type are required.
+
 #### Weekly schedule
 
 A `Weekly` schedule may look like *"every two weeks on Friday"*:
@@ -127,6 +130,8 @@ A `RelativeMonthly` schedule may look like *"every two months, on the last Monda
 }
 ```
 
+Valid values for `weekIndex` are `First`, `Second`, `Third`, `Fourth`, and `Last`.
+
 ## Add a maintenance window configuration with Azure CLI
 
 The following example shows a command to add a new `default` configuration that schedules maintenance to run from 1:00am to 2:00am every Monday: