Fix a fairly common typo in comments
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index d9b05fd..9213290 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6993,7 +6993,7 @@
 #endif
 
 /*
- * Load default in mbetls_ssl_config
+ * Load default in mbedtls_ssl_config
  */
 int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf,
                                  int endpoint, int transport, int preset )