Link to RHEL docs for details about update-ca-trust

guides/common/modules/proc_configuring-tls-for-secure-ldap.adoc

@@ -29,3 +29,8 @@ The filename extensions `.cer` and `.crt` are only conventions and can refer to
 # update-ca-trust extract
 ----
 . Delete the downloaded LDAP certificate from the temporary location on your {ProjectServer}.
+
+ifndef::orcharhino[]
+.Additional resources
+* For more information about adding certificates to the system truststore, see link:{RHELDocsBaseURL}9/html/securing_networks/using-shared-system-certificates_securing-networks[Using shared system certificates] in _{RHEL}{nbsp}9 Securing networks_.
+endif::[]