Update README.md

README.md

@@ -161,10 +161,10 @@ void async_example()
         async_file->info("Async message #{}", i);
 }
 
-//syslog example (linux/osx only)
+//syslog example
 void syslog_example()
 {
-#if defined (__linux__) || defined(__APPLE__)
+#ifdef SPDLOG_ENABLE_SYSLOG 
     std::string ident = "spdlog-example";
     auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID);
     syslog_logger->warn("This is warning that will end up in syslog. This is Linux only!");