corrected name of log4net configuration extension

Rebus.Log4net/Log4NetConfigurationExtensions.cs

@@ -13,7 +13,7 @@ public static class Log4NetConfigurationExtensions
         /// <summary>
         /// Configures Rebus to use Log4Net for all of its internal logging, getting its loggers by calling logger <see cref="LogManager.GetLogger(Type)"/>
         /// </summary>
-        public static void NLog(this RebusLoggingConfigurer configurer)
+        public static void Log4Net(this RebusLoggingConfigurer configurer)
         {
             RebusLoggerFactory.Current = new Log4NetLoggerFactory();
         }