Update virtual-machine-scale-sets-automatic-upgrade.md

Fix typo in the word 'Orchestration'

Author: ifarauanu

articles/virtual-machine-scale-sets/virtual-machine-scale-sets-automatic-upgrade.md

@@ -13,7 +13,7 @@ ms.reviewer: mimckitt
 # Azure Virtual Machine Scale Set automatic OS image upgrades
 
 > [!NOTE]
-> Many of the steps listed in this document apply to Virtual Machine Scale Sets using Uniform Orchestration mode. We recommend using Flexible Orchestration for new workloads. For more information, see [Orchesration modes for Virtual Machine Scale Sets in Azure](virtual-machine-scale-sets-orchestration-modes.md).
+> Many of the steps listed in this document apply to Virtual Machine Scale Sets using Uniform Orchestration mode. We recommend using Flexible Orchestration for new workloads. For more information, see [Orchestration modes for Virtual Machine Scale Sets in Azure](virtual-machine-scale-sets-orchestration-modes.md).
 
 Enabling automatic OS image upgrades on your scale set helps ease update management by safely and automatically upgrading the OS disk for all instances in the scale set.