typo correction

Author: HeidiSteen

articles/search/vector-search-how-to-create-index.md

@@ -105,7 +105,7 @@ Although you can add a field to an index, there's no portal (Import data wizard)
 
 ### [**REST API**](#tab/rest-add-field)
 
-Use the **2023-07-01-Prevew** REST API for vector scenarios. If you're updating an existing index to include vector fields, make sure the `allowIndexDowntime` query parameter is set to `true`.
+Use the **2023-07-01-Preview** REST API for vector scenarios. If you're updating an existing index to include vector fields, make sure the `allowIndexDowntime` query parameter is set to `true`.
 
 In the following REST API example, "title" and "content" contain textual content used in full text search and semantic search, while "titleVector" and "contentVector" contain vector data.