Docs fixes (#1398)

* fix collector docs

* fix message collector param type

src/structures/MessageCollector.js

@@ -8,12 +8,12 @@ const Collector = require('./interfaces/Collector');
 
 /**
  * Collects messages on a channel.
- * @implements {Collector}
+ * @extends {Collector}
  */
 class MessageCollector extends Collector {
 
   /**
-   * @param {TextBasedChannel} channel The channel.
+   * @param {TextChannel|DMChannel|GroupDMChannel} channel The channel.
    * @param {CollectorFilter} filter The filter to be applied to this collector.
    * @param {MessageCollectorOptions} options The options to be applied to this collector.
    * @emits MessageCollector#message

src/structures/ReactionCollector.js

@@ -10,7 +10,7 @@ const Collection = require('../util/Collection');
 
 /**
  * Collects reactions on messages.
- * @implements {Collector}
+ * @extends {Collector}
  */
 class ReactionCollector extends Collector {
 

src/structures/interfaces/Collector.js

@@ -15,8 +15,8 @@ const EventEmitter = require('events').EventEmitter;
  */
 
 /**
- * Interface for defining a new Collector.
+ * Abstract class for defining a new Collector.
- * @interface
+ * @abstract
  */
 class Collector extends EventEmitter {
   constructor(client, filter, options = {}) {