fix a variable name in Release

Author: taooceros

Flow.Launcher.Infrastructure/Logger/Log.cs

@@ -34,7 +34,7 @@ static Log()
 #if DEBUG
             var rule = new LoggingRule("*", LogLevel.Debug, fileTargetASyncWrapper);
 #else
-            var rule = new LoggingRule("*", LogLevel.Info, target);
+            var rule = new LoggingRule("*", LogLevel.Info, fileTargetASyncWrapper);
 #endif
             configuration.LoggingRules.Add(rule);
             LogManager.Configuration = configuration;