Description adjustment for Belgian Electricity

The following descriptions have been adjusted to reflect PEAK. The symbols had previously been mislabeled as Base.

MDC Symbol Bates Dec Freq Curr UOM Description PE FBBW114 lh 2 DW EUR MGW Belgium Peak Eur/MWh Q1 2014 PE FBBW115 lh 2 DW EUR MGW Belgium Peak Eur/MWh Q1 2015