Update LMS/LMOTS documentation

Signed-off-by: Raef Coles <raef.coles@arm.com>
diff --git a/ChangeLog.d/LMS.txt b/ChangeLog.d/LMS.txt
index 0f09f01..6de374f 100644
--- a/ChangeLog.d/LMS.txt
+++ b/ChangeLog.d/LMS.txt
@@ -1,12 +1,11 @@
 Features
-    * Add the LMS post-quantum-safe stateful-hash asymmetric signature scheme
-      as defined in RFC8554 and NIST.SP.200-208. This currently only supports
-      one parameter set (LMS_SHA256_M32_H10), meaning that each private key can
-      be used to sign 1024 messages. As such, it is not intended for use in TLS,
-      but instead for verification of assets transmitted over an insecure
-      channel, particularly firmware images. This is one of the signature
-      schemes recommended by the IETF draft SUIT standard for IOT firmware
-      upgrades (RFC9019).
+    * Add the LMS post-quantum-safe stateful-hash asymmetric signature scheme.
+      Signature verification is production-ready, but generation is for testing
+      purposes only. This currently only supports one parameter set
+      (LMS_SHA256_M32_H10), meaning that each private key can be used to sign
+      1024 messages. As such, it is not intended for use in TLS, but instead for
+      verification of assets transmitted over an insecure channel, particularly
+      firmware images.
     * Add the LM-OTS post-quantum-safe one-time signature scheme, which is
       required for LMS. This can be used independently, but each key can only be
       used to sign one message so is impractical for most circumstances.