fix type for workspace in NotionParent::class

Author: johguentner

src/Entities/NotionParent.php

@@ -65,6 +65,6 @@ public function isDatabase(): bool
      */
     public function isWorkspace(): bool
     {
-        return $this->getObjectType() === 'workspace_id';
+        return $this->getObjectType() === 'workspace';
     }
 }