Merge pull request #39576 from AndrewNikolin/patch-1

Update search-howto-index-cosmosdb.md

Author: ktoliver

articles/search/search-howto-index-cosmosdb.md

@@ -245,7 +245,7 @@ Ensure that the schema of your target index is compatible with the schema of the
 > [!NOTE]
 > For partitioned collections, the default document key is Azure Cosmos DB's `_rid` property, which Azure Cognitive Search automatically renames to `rid` because field names cannot start with an underscore character. Also, Azure Cosmos DB `_rid` values contain characters that are invalid in Azure Cognitive Search keys. For this reason, the `_rid` values are Base64 encoded.
 > 
-> For MongoDB collections, Azure Cognitive Search automatically renames the `_id` property to `doc_id`.  
+> For MongoDB collections, Azure Cognitive Search automatically renames the `_id` property to `id`.  
 
 ### Mapping between JSON Data Types and Azure Cognitive Search Data Types
 | JSON data type | Compatible target index field types |