change help text to match embedded usage

now that that is the default

Author: dceejay

lib/index.js

@@ -34,7 +34,7 @@ var commands = {
 
 function help() {
     var helpText = "Usage:" + "\n" +
-        "   node-red-admin <command> [args] [--help] [--userDir DIR] [--json]\n\n" +
+        "   node-red admin <command> [args] [--help] [--userDir DIR] [--json]\n\n" +
         "Description:" + "\n" +
         "   Node-RED command-line client\n\n" +
         "Commands:\n" +

lib/result.js

@@ -195,7 +195,7 @@ module.exports = {
     },
     help: function(command) {
         var helpText = "Usage:" + "\n" +
-            "   node-red-admin " + command.usage + "\n\n" +
+            "   node-red admin " + command.usage + "\n\n" +
             "Description:" + "\n" +
             "   " + command.description + "\n\n" +
             "Options:" + "\n" +