Clarify settings for PKI and Basic authentication provider (elastic#83491) (elastic#83499)

jportner · web-flow · commit 5b4b66a9a7cf · 2020-11-16T17:30:50.000-05:00
diff --git a/docs/user/security/authentication/index.asciidoc b/docs/user/security/authentication/index.asciidoc
@@ -120,6 +120,7 @@ You can also configure both PKI and basic authentication for the same {kib} inst
 
 [source,yaml]
 --------------------------------------------------------------------------------
+server.ssl.clientAuthentication: optional
 xpack.security.authc.providers:
   pki.pki1:
     order: 0
