Reverting IG Time Domain (Erroneous comment)

VOEvent.tex

@@ -10,7 +10,7 @@
 \title{Sky Event Reporting Metadata (VOEvent)}
 
 % see ivoatexDoc for what group names to use here
-\ivoagroup[WG]{DAL}
+\ivoagroup[IG]{Time Domain}
 
 \author{Baptiste {\bf Cecconi}, Observatoire de Paris-PSL, France}
 \author{\\Alasdair {\bf Allan}, University of Exeter, UK}