fix sql output for default entityType

Author: mitchwadair

src/content/docs/column-types/singlestore.mdx

@@ -569,7 +569,7 @@ const table = singlestoreTable('table', {
 
 ```sql
 CREATE TABLE `table` (
-	`embedding` vector(10)
+	`embedding` vector(10, 'F32')
 );
 ```
 </Section>