Merge pull request #55722 from mletalie/GH55362

[GH55362] Change m5.x2large to m5.2xlarge per GH55362

Author: sjhala-ccs

modules/rosa-sts-overview-of-the-default-cluster-specifications.adoc

@@ -32,7 +32,7 @@ You can quickly create a {product-title} (ROSA) cluster with the AWS Security To
 * The default AWS Key Management Service (KMS) key is used as the encryption key for persistent data
 
 |Control plane node configuration
-|* Control plane node instance type: m5.x2large (8 vCPU, 32 GiB RAM)
+|* Control plane node instance type: m5.2xlarge (8 vCPU, 32 GiB RAM)
 * Control plane node count: 3
 
 |Infrastructure node configuration