Fixing grammar, as per https://github.com/antlr/grammars-v4/issues/1956
Fixing grammar, as per https://github.com/antlr/grammars-v4/issues/1956

kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX