2.3 - Griefing
Attempting to ruin your team's experience and gameplay is not allowed. This means teamkilling, and any other way that possibly could ruin your team's game.
Following this rule, telling the fellow runners the wrong door and getting them killed for it could be seen as griefing. But in my opinion it is harsh to punish for this because it's still their choice what door they do choose to go through, and who they trust, it's supposed to be 50/50 either way.