Display command-message closing bracket correctly. Fixes BUKKIT-4894

This commit adds proper formatting to the closing bracket used when certain
commands send messages to all players with the broadcast-channel
permission.

By: Luke A <stuntguy3000@gmail.com>

paper-api/src/main/java/org/bukkit/command/Command.java

@@ -345,7 +345,7 @@ public abstract class Command {
         }
 
         Set<Permissible> users = Bukkit.getPluginManager().getPermissionSubscriptions(Server.BROADCAST_CHANNEL_ADMINISTRATIVE);
-        String colored = ChatColor.GRAY + "" + ChatColor.ITALIC + "[" + result + "]";
+        String colored = ChatColor.GRAY + "" + ChatColor.ITALIC + "[" + result + ChatColor.GRAY + ChatColor.ITALIC + "]";
 
         if (sendToSource && !(source instanceof ConsoleCommandSender)) {
             source.sendMessage(message);