updated compiler doc

Author: dkleinF5

content/waf/configure/compiler.md

@@ -32,8 +32,9 @@ For more information about policies, read the [Configure policies]({{< ref "/waf
 
 To complete this guide, you will need the following prerequisites:
 
-- An active F5 WAF for NGINX subscription (Purchased or trial)
-- Credentials to the [MyF5 Customer Portal](https://account.f5.com/myf5), provided by email from F5, Inc.
+- Active F5 NGINX App Protect WAF subscription in [MyF5](https://my.f5.com/manage/s/) (purchased or trial).
+  - Download the [SSL certificate and private key]({{< ref "/waf/install/compiler.md#Download your subscription credentials" >}}) associated with your  F5 NGINX App Protect WAF subscription from the MyF5 Customer Portal.
+- [Docker registry credentials]({{< ref "/waf/configure/compiler.md#Configure Docker for the F5 Container Registry" >}}) are needed to access private-registry.nginx.com
 - [Docker](https://docs.docker.com/get-started/get-docker/)
 
 ## Download your subscription credentials