Update README.md

README.md

@@ -240,7 +240,7 @@ void err_handler_example()
 void syslog_example()
 {
     std::string ident = "spdlog-example";
-    auto syslog_logger = spdlog::syslog_logger("syslog", ident, LOG_PID);
+    auto syslog_logger = spdlog::syslog_logger_mt("syslog", ident, LOG_PID);
     syslog_logger->warn("This is warning that will end up in syslog.");
 }
 ```