Update code to align with tls13 coding standard

Change-Id: I3c98b7d0db63aecc712a67f4e8da2cb9945c8f17
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/tests/suites/test_suite_ssl.data b/tests/suites/test_suite_ssl.data
index 644c5ab..848a497 100644
--- a/tests/suites/test_suite_ssl.data
+++ b/tests/suites/test_suite_ssl.data
@@ -3277,7 +3277,7 @@
 depends_on:MBEDTLS_SSL_PROTO_TLS1_3
 conf_version:MBEDTLS_SSL_IS_CLIENT:MBEDTLS_SSL_TRANSPORT_DATAGRAM:MBEDTLS_SSL_VERSION_TLS1_3:MBEDTLS_SSL_VERSION_TLS1_3:MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE
 
-Version config: supported server TLS 1.3 only
+Version config: valid server TLS 1.3 only
 depends_on:MBEDTLS_SSL_PROTO_TLS1_3
 conf_version:MBEDTLS_SSL_IS_SERVER:MBEDTLS_SSL_TRANSPORT_STREAM:MBEDTLS_SSL_VERSION_TLS1_3:MBEDTLS_SSL_VERSION_TLS1_3:0