refactor: add missing comma to page level operations array for consistency

Author: MrPunyapal

src/Playwright/Page.php

@@ -652,7 +652,7 @@ private function isPageLevelOperation(string $method): bool
             'reload',
             'screenshot',
             'waitForLoadState',
-            'waitForURL'
+            'waitForURL',
         ];
 
         return in_array($method, $pageLevelOperations, true);