DOC-5210 Added more details to the INE certificate descriptions

Author: rrelledge

content/operate/rs/security/certificates/_index.md

@@ -22,9 +22,9 @@ Here's the list of supported certificates that create secure, encrypted connecti
 | Certificate name | Autogenerated | Description |
 |------------------|:---------------:|-------------|
 | `api` | <span title="Yes">&#x2705;</span> | Encrypts [REST API]({{< relref "/operate/rs/references/rest-api/" >}}) requests and responses. |
-| `ccs_internode_encryption` | <span title="Yes">&#x2705;</span> | Control plane [internode encryption]({{< relref "/operate/rs/security/encryption/internode-encryption" >}}). |
+| `ccs_internode_encryption` | <span title="Yes">&#x2705;</span> | Control plane [internode encryption]({{< relref "/operate/rs/security/encryption/internode-encryption" >}}). Encrypts internal traffic for cluster management. |
 | `cm` | <span title="Yes">&#x2705;</span> | Secures connections to the Redis Enterprise Cluster Manager UI. |
-| `data_internode_encryption` | <span title="Yes">&#x2705;</span> | Data plane [internode encryption]({{< relref "/operate/rs/security/encryption/internode-encryption" >}}). |
+| `data_internode_encryption` | <span title="Yes">&#x2705;</span> | Data plane [internode encryption]({{< relref "/operate/rs/security/encryption/internode-encryption" >}}). Encrypts internal data traffic between shards and the data management controller (DMC). |
 | `ldap_client` | <span title="No">:x:</span> | Secures connections between LDAP clients and LDAP servers. |
 | `metrics_exporter` | <span title="Yes">&#x2705;</span> | Sends Redis Enterprise metrics to external [monitoring tools]({{< relref "/operate/rs/monitoring/" >}}) over a secure connection. |
 | `mtls_trusted_ca` | <span title="No">:x:</span>  | Required to enable certificate-based authentication for secure, passwordless access to the REST API. |