[OCPBUGS-45655]: Rearranging order of HCP on AWS docs

Author: lahinson

hosted_control_planes/hcp-deploy/hcp-deploy-aws.adoc

@@ -34,6 +34,8 @@ include::modules/hcp-aws-create-public-zone.adoc[leveloffset=+1]
 
 include::modules/hcp-aws-create-role-sts-creds.adoc[leveloffset=+1]
 
+include::modules/hcp-aws-enable-private-link.adoc[leveloffset=+1]
+
 include::modules/hcp-aws-enable-ext-dns.adoc[leveloffset=+1]
 
 include::modules/hcp-aws-enable-ext-dns-prereq.adoc[leveloffset=+2]
@@ -44,8 +46,6 @@ include::modules/hcp-aws-create-dns-hosted-zone.adoc[leveloffset=+2]
 
 include::modules/hcp-aws-hc-ext-dns.adoc[leveloffset=+2]
 
-include::modules/hcp-aws-enable-private-link.adoc[leveloffset=+1]
-
 include::modules/hcp-aws-deploy-hc.adoc[leveloffset=+1]
 
 [role="_additional-resources"]

modules/hcp-aws-enable-ext-dns-prereq.adoc

@@ -11,3 +11,5 @@ Before you can set up external DNS for {hcp} on {aws-first}, you must meet the f
 * You created an external public domain.
 
 * You have access to the {aws-short} Route53 Management console.
+
+* You enabled {aws-short} PrivateLink for {hcp}.