Update ping.js

commands/ping.js

 const Discord = require('discord.js');
 
-exports.run = async(client, message, args) => {
+exports.run = async(bot, message, args) => {
 
-      message.channel.send(+ client.ping + `ms `)
+      message.channel.send(+ bot.ping + `ms `)
 };
 
 module.exports.help = {