Update DeleteMany.java

Add a space between method params

Author: djsauble

astra-db-client/src/test/java/com/dtsx/astra/sdk/documentation/DeleteMany.java

@@ -9,7 +9,7 @@ public class DeleteMany {
   public static void main(String[] args) {
     AstraDB db = new AstraDB("<token>", "<api_endpoint>");
     AstraDBCollection collection = db
-        .createCollection("collection_vector1",14);
+        .createCollection("collection_vector1", 14);
 
     // Delete items from an existing collection with a query
     int deletedCount = collection