docs(FetchArchivedThreadOptions): before respects `archive_timestam…

…p`, not creation timestamp (#9240)

docs(FetchArchivedThreadOptions): correct `before` description

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/discord.js/src/managers/ThreadManager.js

@@ -118,7 +118,7 @@ class ThreadManager extends CachedManager {
    * @property {string} [type='public'] The type of threads to fetch (`public` or `private`)
    * @property {boolean} [fetchAll=false] Whether to fetch **all** archived threads when `type` is `private`
    * <info>This property requires the {@link PermissionFlagsBits.ManageThreads} permission if `true`.</info>
-   * @property {DateResolvable|ThreadChannelResolvable} [before] Only return threads that were created before this Date
+   * @property {DateResolvable|ThreadChannelResolvable} [before] Only return threads that were archived before this Date
    * or Snowflake
    * <warn>Must be a {@link ThreadChannelResolvable} when `type` is `private` and `fetchAll` is `false`.</warn>
    * @property {number} [limit] Maximum number of threads to return