Use Bot#getConfig() instead of using a public static config & Add missing newline

src/main/java/com/jagrosh/jmusicbot/commands/admin/SetvcCmd.java

@@ -18,7 +18,7 @@ package com.jagrosh.jmusicbot.commands.admin;
 import java.util.List;
 import com.jagrosh.jdautilities.command.CommandEvent;
 import com.jagrosh.jdautilities.commons.utils.FinderUtil;
-import com.jagrosh.jmusicbot.JMusicBot;
+import com.jagrosh.jmusicbot.Bot;
 import com.jagrosh.jmusicbot.commands.AdminCommand;
 import com.jagrosh.jmusicbot.settings.Settings;
 import com.jagrosh.jmusicbot.utils.FormatUtil;
@@ -30,12 +30,12 @@ import net.dv8tion.jda.core.entities.VoiceChannel;
  */
 public class SetvcCmd extends AdminCommand 
 {
-    public SetvcCmd()
+    public SetvcCmd(Bot bot)
     {
         this.name = "setvc";
         this.help = "sets the voice channel for playing music";
         this.arguments = "<channel|NONE>";
-        this.aliases = JMusicBot.config.getAliases(this.name);
+        this.aliases = bot.getConfig().getAliases(this.name);
     }
     
     @Override