Optimally, increment your guide with additional information if possible, like what's in the boss room, the solution for puzzles that you came across, those kind of stuff are always very much appreciated by everyone.
If a guide is incorrect, I politely ask everyone that followed those instructions and got misleaded to downvote the guide and make a new one on top.
When a guide is labeled "confirmed" it means that a moderator confirmed it, meaning it has no chance of this specific guide being incorrect.
That is all!
Have a nice day/night. Remember to drink water