RHDEVDOCS-4050 small correction on adding subscription entitlements (#47004)

* Update modules/builds-source-secrets-entitlements.adoc

Updating modules/builds-source-secrets-entitlements.adoc based 
on ticket: https://issues.redhat.com/browse/RHDEVDOCS-4050
and issue: #43099

Author: JoaoFula

modules/builds-source-secrets-entitlements.adoc

@@ -10,7 +10,7 @@ Builds that use Red Hat subscriptions to install content must include the entitl
 
 .Prerequisites
 
-You must have access to Red Hat entitlements through your subscription, and the entitlements must have separate public and private key files.
+You must have access to Red Hat entitlements through your subscription. The entitlement secret is automatically created by the Insights Operator.
 
 
 [TIP]
@@ -25,15 +25,7 @@ RUN rm /etc/rhsm-host
 
 .Procedure
 
-. Create a secret containing your entitlements, ensuring that there are separate files containing the public and private keys:
-+
-[source,terminal]
-----
-$  oc create secret generic etc-pki-entitlement --from-file /path/to/entitlement/{ID}.pem \
-> --from-file /path/to/entitlement/{ID}-key.pem ...
-----
-
-. Add the secret as a build volume in the build configuration’s Docker strategy:
+. Add the etc-pki-entitlement secret as a build volume in the build configuration’s Docker strategy:
 +
 [source,yaml]
 ----