improve document
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 8076b14..374e1a2 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -229,7 +229,7 @@
*
* NOTE: The typical accuracy of an RTC crystal is ±100 to ±20 parts per
* million (360 to 72 milliseconds per hour). Default tolerance
- * windows is 6s, thus in the worst case client and servers must
+ * window is 6s, thus in the worst case clients and servers must
* sync up their system time every 6000/360/2~=8 hours.
*/
client_age = obfuscated_ticket_age - session->ticket_age_add;