Corrected Query to deal with multiple market ids

https://images-na.ssl-images-amazon.com/images/G/01/mwsportal/doc/en_US/orders/MWSOrdersApiReference._V384929319_.pdf

According to the Amazon MWS specification, multiple marketplace ids are listed as MarketplaceId.Id.1,MarketplaceId.Id.2,etc. and not MarketplaceIdList.Id.1, MarketplaceIdList.Id.2, etc.