Revert "OSSMDOC-633: Document preliminary integration with cert-manager."

Author: bergerhoffer

modules/ossm-config-external-ca.adoc

@@ -3,7 +3,7 @@
 // * service_mesh/v2x/ossm-security.adoc
 
 [id="ossm-cert-manage_{context}"]
-= Using a user-defined certificate and key
+= Adding an external certificate authority key and certificate
 
 By default, {SMProductName} generates a self-signed root certificate and key and uses them to sign the workload certificates. You can also use the user-defined certificate and key to sign workload certificates with user-defined root certificate. This task demonstrates an example to plug certificates and key into {SMProductShortName}.