EUtilities Cookbook - Accn to gi

Hi,

I think that rettype for the section "Get GIs for a list of accessions"
should be

-rettype => 'gi');

instead of 'gilist' as it is now. I think this change is due to a change in
NCBI eutils.

webpage:
http://www.bioperl.org/wiki/HOWTO:EUtilities_Cookbook#Get_GIs_for_a_list_of_accessions

Thanks,
Shyam