[SSL] Add note on DCV tokens for multiple certificate packs

Clarify the requirement for multiple DCV tokens for certificates with different packs.
CUSTESC-45241

Author: ngayerie

src/content/docs/ssl/edge-certificates/changing-dcv-method/methods/txt.mdx

@@ -51,6 +51,7 @@ Repeat this process for all the DCV records returned in the `validation_records`
 If one or more of the hostnames on the certificate fail to validate, the certificate will not be issued or renewed.
 
 This means that a wildcard certificate covering `example.com` and `*.example.com` will require two DCV tokens to be placed at the authoritative DNS provider. Similarly, a certificate with five hostnames in the SAN (including a wildcard) will require five DCV tokens to be placed at the authoritative DNS provider.
+Certificates with several packs (RSA and ECDSA for example) may also require several DCV tokens.
 
 ### Complete DCV