OADP-709: Correct infprmation in "Enabling self-signed CA certificates"

Author: RichardHoch

modules/oadp-self-signed-certificate.adoc

@@ -38,4 +38,4 @@ spec:
 ...
 ----
 <1> Specify the Base46-encoded CA certificate string.
-<2> Must be `false` to disable SSL/TLS security.
+<2> The `insecureSkipTLSVerify` configuration can be set to either `"true"` or `"false"`. If set to `"true"`, SSL/TLS security is disabled. If set to `"false"`, SSL/TLS security is enabled.