Clarify that Modern equals PCI DSS when used with TLS 1.3

Author: RebeccaTamachiro

src/content/docs/ssl/edge-certificates/additional-options/cipher-suites/customize-cipher-suites/dashboard.mdx

@@ -12,7 +12,7 @@ import { Render, Details } from "~/components";
 
 When configuring cipher suites via dashboard, you can use three different selection modes:
 
-- **By security level**: allows you to select between the predefined [Cloudflare recommendations](/ssl/edge-certificates/additional-options/cipher-suites/recommendations/) (Modern, Compatible, or Legacy).
+- **By security level**: allows you to select between the predefined [Cloudflare recommendations](/ssl/edge-certificates/additional-options/cipher-suites/recommendations/) (Modern[^1], Compatible, or Legacy).
 - **By compliance standard**: allows you to select cipher suites grouped according to [industry standards](/ssl/edge-certificates/additional-options/cipher-suites/compliance-status/) (PCI DSS or FIPS-140-2).
 - **Custom**: allows you to individually select the cipher suites you would like to support.
 
@@ -32,4 +32,10 @@ For any of the modes, you should keep in mind the following configuration condit
 3. For the **Cipher suites** setting select **Configure**.
 4. Choose a mode to select your cipher suites and select **Next**.
 5. Select a predefined set of cipher suites or, if you opted for **Custom**, specify which cipher suites you want to allow. Make sure you are aware of how your selection will interact with Minimum TLS version, TLS 1.3, and the certificate algorithm (ECDSA or RSA).
-6. Select **Save** to confirm.
+6. Select **Save** to confirm.
+
+:::note[Modern or PCI DSS]
+When used with [TLS 1.3](/ssl/edge-certificates/additional-options/cipher-suites/#tls-13), Modern is the same as PCI DSS.
+:::
+
+[^1]: When used with TLS 1.3, Modern is the same as PCI DSS.