add deprectaed in event arguments

Author: neeta-wagento

app/code/Magento/CatalogSearch/Model/Indexer/Fulltext/Action/DataProvider.php

@@ -316,6 +316,10 @@ public function getSearchableAttributes($backendType = null)
             /** @var \Magento\Eav\Model\Entity\Attribute[] $attributes */
             $attributes = $productAttributes->getItems();
 
+            /**
+             * Event argument `catelogsearch_searchable_attributes_load_after` is @deprecated 100.2.5. Use
+             * `catalogsearch_searchable_attributes_load_after` instead.
+             */
             $this->eventManager->dispatch(
                 'catalogsearch_searchable_attributes_load_after',
                 ['engine' => $this->engine, 'attributes' => $attributes]