fix: correct @PARAM docblock flagged by updated phpcs standard

The refreshed coding-standards toolchain surfaced two pre-existing
docblock violations in class-rop-scheduler-model.php (missing @PARAM type
and spacing). Fixed so PHP Lint passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: selul

includes/admin/models/class-rop-scheduler-model.php

@@ -535,8 +535,8 @@ private function get_week_start( $start = 0 ) {
 	/**
 	 * Update the events timeline.
 	 *
-	 * @param $new_events $new_events New events timeline.
-	 * @param string     $account_id account id.
+	 * @param array  $new_events New events timeline.
+	 * @param string $account_id account id.
 	 *
 	 * @return bool Success or not.
 	 */