Update tls-ssl.md (#2681)

* Update tls-ssl.md

Added note to clarify that PEM bundle contains multiple TLS certificates.

* Update content/rc/security/database-security/tls-ssl.md

---------

Co-authored-by: Cameron Bates <102550101+cmilesb@users.noreply.github.com>

content/rc/security/database-security/tls-ssl.md

@@ -111,6 +111,10 @@ The download contains a file called `redis_ca.pem`, which includes the following
 
 - Publicly trusted GlobalSign Root CA
 
+{{<note>}}
+The downloaded PEM file contains multiple certificates. Make sure to import **all** certificates to your client trust store. If your client code is not implemented properly, it may only import the first certificate. 
+{{</note>}}
+
 To inspect the certificates in `redis_ca.pem`, run the `keytool` command:
 
 ```sh