DOC-5776 RS: Added INE certs to the list of certs that can be replaced (#2189)

Author: rrelledge

content/operate/rs/security/certificates/updating-certificates.md

@@ -23,7 +23,7 @@ tab1="Cluster Manager UI"
 tab2="rladmin"
 tab3="REST API" >}}
 
-To replace proxy or syncer certificates using the Cluster Manager UI:
+To replace proxy, syncer, or internode encryption certificates using the Cluster Manager UI:
 
 1. Go to **Cluster > Security > Certificates**.