tests: ssl: early data: Fix comments

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 64ee0f7..20f8037 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -4202,7 +4202,7 @@
         case TEST_EARLY_DATA_HRR:
             /*
              * Remove server support for the group negotiated in
-             * mbedtls_test_get_tls13_ticket() forcing an HelloRetryRequest.
+             * mbedtls_test_get_tls13_ticket() forcing a HelloRetryRequest.
              */
             server_options.group_list = group_list + 1;
             break;
@@ -4696,8 +4696,9 @@
                  * max_early_data_size is smaller than the smallest possible
                  * inner content/protected record. Take into account this
                  * possibility here but only for max_early_data_size values
-                 * that are close to write_size. Below, chosen 1 for one byte
-                 * of inner type and 16 bytes for AEAD expansion (IV, ...).
+                 * that are close to write_size. Below, '1' is for the inner
+                 * type byte and '16' is to take into account some AEAD
+                 * expansion (tag, ...).
                  */
                 if (ret == MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE) {
                     if (scenario == TEST_EARLY_DATA_SERVER_REJECTS) {