Wrong documentation is even worse than no documentation. Without it your at least force to look at the code and validate your assumptions. Get a feel for the code base. Wrong docs pointing you to tech that’s not even used is going to be a mess.
Furthermore, software is essentially versioned by its documentation first. If it says it does something, people will depend on that, and it not doing that is a bug.
I wasted two hours yesterday just to track down a bug that was in the documentation, not the code. It's so frustrating. Maintaining good documentation is incredibly hard especially when you're trying to document how your program interacts with other software because now you have to change your documentation when a third party changes their code.
