fix

Author: rustagir

source/fundamentals/indexes.txt

@@ -225,7 +225,7 @@ embeddings stored in MongoDB Atlas. To learn more about Atlas Vector Search, see
 You can call the following methods on a collection to manage your Atlas
 Search and Vector Search indexes:
 
-- ``createSearchIndex()`` *(valid for Search indexes only)*
+- ``createSearchIndex()`` *(valid for Atlas Search indexes only)*
 - ``createSearchIndexes()``
 - ``listSearchIndexes()``
 - ``updateSearchIndex()``