usage-guide: fix s2n_mode description
@@ -277,9 +277,7 @@ an error "category". See [Error Handling](#error-handling) for more detail.
typedef enum { S2N_SERVER, S2N_CLIENT } s2n_mode;
```
-**s2n_mode** is used to declare connections as server or client type,
-respectively. At this time, s2n does not function as a client and only
-S2N_SERVER should be used.
+**s2n_mode** is used to declare connections as server or client type, respectively.
### s2n_blocked_status
