fix grammar error

commands/utility/server.js

@@ -20,10 +20,10 @@ class ServerCommand extends Command {
 			.setColor('#0099ff')
 			.setTitle(message.guild.name)
 			.setThumbnail(message.guild.iconURL())
-			.addField('Numbers of users', message.guild.members.filter(member => !member.user.bot).size, true)
+			.addField('Number of users', message.guild.members.filter(member => !member.user.bot).size, true)
-			.addField('Numbers of bots', message.guild.members.filter(member => member.user.bot).size, true)
+			.addField('Number of bots', message.guild.members.filter(member => member.user.bot).size, true)
-			.addField('Total numbers of members', message.guild.memberCount, true)
+			.addField('Total number of members', message.guild.memberCount, true)
-			.addField('Numbers of channel', message.guild.channels.size, true)
+			.addField('Number of channels', message.guild.channels.size, true)
 			.addBlankField()
 			.addField('Date when guild created', message.guild.createdAt, true)
 			.addField('Owner', message.guild.owner, true)