fix(docs): Correctly document Chat timestamp property

close #287

index.d.ts

@@ -659,7 +659,7 @@ declare namespace WAWebJS {
     isReadOnly: boolean,
     /** Title of the chat */
     name: string,
-    /** Unix timestamp for when the chat was created */
+    /** Unix timestamp for when the last activity occurred */
     timestamp: number,
     /** Amount of messages unread */
     unreadCount: number,

src/structures/Chat.js

@@ -46,7 +46,7 @@ class Chat extends Base {
         this.unreadCount = data.unreadCount;
 
         /**
-         * Unix timestamp for when the chat was created
+         * Unix timestamp for when the last activity occurred
          * @type {number}
          */
         this.timestamp = data.t;