[ubl-comment] Sheet names spacing not consistent

Sorry to be nit-picking, but the names of the Excel
spreadsheets don't seem to be consistently spaced
across the 7 doc-types.

"DespatchAdvice", "OrderCancellation", "OrderResponse",
and "ReceiptAdvice" are joint without space while
"Order Response Simple" sheet is named with spaces.

Would you like to last one to "OrderResponseSimple"?


cheers,
Chin Chee-Kai
SoftML