update example

src/sntp.h

@@ -6,3 +6,5 @@ struct mg_connection *mg_sntp_connect(struct mg_mgr *mgr, const char *url,
                                       mg_event_handler_t fn, void *fn_data);
 void mg_sntp_request(struct mg_connection *c);
 int64_t mg_sntp_parse(const unsigned char *buf, size_t len);
+
+uint64_t mg_now(void);     // Return milliseconds since Epoch

src/util.h

@@ -18,7 +18,6 @@ uint16_t mg_ntohs(uint16_t net);
 uint32_t mg_ntohl(uint32_t net);
 uint32_t mg_crc32(uint32_t crc, const char *buf, size_t len);
 uint64_t mg_millis(void);  // Return milliseconds since boot
-uint64_t mg_now(void);     // Return milliseconds since Epoch
 bool mg_path_is_sane(const struct mg_str path);
 
 #define mg_htons(x) mg_ntohs(x)