relnotes/13.0: note changed AES-NI identification by geli

A user on IRC wondered why his AES-NI-enabled CPU was identified by geli
as "Crypto: accelerated software" on a 13.0-RC, when 12.2 identified it
as "Crypto: hardware".

To help alliviate this confusion, make explicit mention of the change.
While here, also add note to clear up confusion about no functional
change.

Reviewed by:	jhb
Differential Revision:	https://reviews.freebsd.org/D29281

website/content/en/releases/13.0R/relnotes.adoc

@@ -228,6 +228,9 @@ modern cryptographic algorithms as well as simplify the interface for both
 device drivers and framework consumers.
 gitref:c03414326909[repository=src] {{< sponsored "Chelsio Communications" >}}
 
+man:geli[8] now reports the use of accelerated software cryptography (such as AES-NI on x86 CPUs) as "accelerated software" rather than "hardware".
+This is purely a change in naming, and does not imply reduced performance or support. gitref:a3d565a1188f[repository=src] {{< sponsored "Chelsio Communications" >}}
+
 Removed support for Kerberos GSS algorithms deprecated by RFCs 6649 and 8429.
 gitref:dee3aa83d1b6[repository=src] {{< sponsored "Chelsio Communications" >}}