Fix column name

src/main/scala/Transform.scala

@@ -39,7 +39,7 @@ case class GamesAnalysis(teams: os.Path, games: os.Path, stats: os.Path) {
 
   val statsGamesDf =
     statsDf
-      .join(gamesDf, statsDf("game_id") === gamesDf("id"))
+      .join(gamesDf, statsDf("game.id") === gamesDf("id"))
       .join(teamsDf, statsDf("team.id") === teamsDf("id"))
 
   val statsByGameAndTeamDf = statsGamesDf