tls13: cli: Fix comment

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 0539553..2ec898b 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -2171,7 +2171,7 @@
  * The client has sent an early data indication extension in its first
  * ClientHello, it has not received the response (ServerHello or
  * HelloRetryRequest) from the server yet. The transform to protect early data
- * is not set either as for middlebox compatibility a dummy CCs may have to be
+ * is not set either as for middlebox compatibility a dummy CCS may have to be
  * sent in clear. Early data cannot be sent to the server yet.
  */
     MBEDTLS_SSL_EARLY_DATA_STATE_IND_SENT,