The idea is a very bad idea. Imagine if wikipedia would do that, what will happen. Fortunately they don't and they found other way to fix the problem.
The issue here is: part of the documentation is not up to date anymore
The underlying issue is : the culture of the company probably doesn't encourage written documentation and probably prefer 1-1 communication. As a result documentation is out of date
The right solution is: Dont share documentation in 1-1, always write it on the wiki, and give the ability to people to notify that some part of the page is out of date so that the owner of the document can fix it
This is not a side issue, especially in the "new" world in which a lot of organizations need to work remotely