Update hardware-considerations-all-platforms.md

There are two As in "AArch64", and both should be capitalized - https://www.arm.com/architecture/learn-the-architecture/a-profile

data/reusables/enterprise_installation/hardware-considerations-all-platforms.md

@@ -35,7 +35,7 @@ The available space on the root filesystem will be 50% of the total disk size. Y
 
 The CPU and memory resources that {% data variables.product.prodname_ghe_server %} requires depend on the levels of activity for users, automations, and integrations.
 
-Any VMs you provision for {% data variables.location.product_location %} must use the x86-64 CPU architecture. Other architectures are not supported, such as Arch64 or arm64.
+Any VMs you provision for {% data variables.location.product_location %} must use the x86-64 CPU architecture. Other architectures are not supported, such as AArch64 or arm64.
 
 {% ifversion ghes %}