Minor example fix

tests/file_log.cpp

@@ -52,7 +52,7 @@ TEST_CASE("simple_file_logger", "[simple_logger]]")
     auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("logger", filename);
     logger->set_pattern("%v");
 
-    
+
     logger->info("Test message {}", 1);
     logger->info("Test message {}", 2);
     logger->flush();