fix comment

lib/gossiper.js

@@ -38,7 +38,7 @@ Gossiper.prototype.start = function(callback) {
     this.server.listen(this.port, this.ip_to_bind, callback);
   } else {
     // this is an ugly hack to get the hostname of the local machine
-    // we don't listen on an ip because it's important that we listen 
+    // we don't listen on any ip because it's important that we listen 
     // on the same ip that the server identifies itself as
     child_process.exec('hostname', function(error, stdout, stderr) {
       var l = stdout.length;