Add xmldoc mention of valid `OnlineID` values
Add xmldoc mention of valid `OnlineID` values

NeoAdonis/osu,NeoAdonis/osu,NeoAdonis/osu,peppy/osu-new,smoogipoo/osu,smoogipoo/osu,ppy/osu,peppy/osu,ppy/osu,ppy/osu,smoogipooo/osu,peppy/osu,smoogipoo/osu,peppy/osu