Merge pull request #41126 from EricPonvelle/OSDOCS-3078_AWS-Account-Limits

OSDOCS-3078: Updated some text in the AWS Accounts Limits.

Author: EricPonvelle

modules/aws-limits.adoc

@@ -18,13 +18,14 @@ The following table summarizes the AWS components whose limits can impact your a
 |Instance Limits
 |Varies
 |Varies
-|By default, each cluster creates the following instances:
+|At a minimum, each cluster creates the following instances:
 
 * One bootstrap machine, which is removed after installation
 * Three master nodes
-* Three worker nodes
+* Two infrastructure nodes for a single availability zone; three infrascture nodes for multi-availability zones
+* Two worker nodes for a single availability zone; three worker nodes for multi-availability zones
 
-These instance type counts are within a new account's default limit. To deploy more worker nodes, enable autoscaling, deploy large workloads, or use a different instance type, review your account limits to ensure that your cluster can deploy the machines that you need.
+These instance type counts are within a new account's default limit. To deploy more worker nodes, deploy large workloads, or use a different instance type, review your account limits to ensure that your cluster can deploy the machines that you need.
 
 In most regions, the bootstrap and worker machines uses an `m4.large` machines and the master machines use `m4.xlarge` instances. In some regions, including all regions that do not support these instance types, `m5.large` and `m5.xlarge` instances are used instead.