Clarify changelog

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/ChangeLog.d/armv8-aesce.txt b/ChangeLog.d/armv8-aesce.txt
index 999d439..ec5889c 100644
--- a/ChangeLog.d/armv8-aesce.txt
+++ b/ChangeLog.d/armv8-aesce.txt
@@ -1,3 +1,3 @@
 Features
-   * Support use of Armv8-A Crypto Extensions for hardware acclerated AES on
-     Thumb and Arm targets.
+   * Support use of Armv8-A Cryptographic Extensions for hardware acclerated
+     AES when compiling for Thumb (T32) or 32-bit Arm (A32).