Improve tls13-support.md
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/docs/architecture/tls13-support.md b/docs/architecture/tls13-support.md
index 2ac3950..d6fc19e 100644
--- a/docs/architecture/tls13-support.md
+++ b/docs/architecture/tls13-support.md
@@ -4,8 +4,8 @@
Overview
--------
-Mbed TLS provides an implementation of the TLS 1.3. The TLS 1.3 support
-enablement is controlled by the MBEDTLS_SSL_PROTO_TLS1_3 configuration option.
+Mbed TLS provides an implementation of the TLS 1.3 protocol. The TLS 1.3 support
+may be enabled using the MBEDTLS_SSL_PROTO_TLS1_3 configuration option.
Support description
-------------------