Adapt ChangeLog
Make explicit that buffering support is about DTLS.
diff --git a/ChangeLog b/ChangeLog
index a97bfaa..b9b873b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,7 +12,7 @@
last paragraph).
* Add support for packing multiple records within a single datagram,
enabled by default.
- * Add support for buffering out-of-order handshake messages.
+ * Add support for buffering out-of-order handshake messages in DTLS.
The maximum amount of RAM used for this can be controlled by the
compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
in mbedtls/config.h.
