Update comments

Author: socieboy

src/channel/socketio-private-channel.ts

@@ -1,7 +1,7 @@
 import { SocketIoChannel } from './socketio-channel';
 
 /**
- * This class represents a Socket.io presence channel.
+ * This class represents a Socket.io private channel.
  */
 export class SocketIoPrivateChannel extends SocketIoChannel {
     /**