Collaborative editing technology
Collaborative editing technology is a proper technical term for what is now often called a wiki. It is also sometimes called a repo, short for "repository", implying a text corpus that is kept up to some standard of integrity. This word is probably preferable to "wiki" as it doesn't imply the wiki way ideology or place incompetent individuals such as those who edit Meatball Wiki in a position to resolve questions like "what is a troll?"
There is a great deal written on collaborative editing technology since the 1970s, including the reasons why many early pioneers, like Douglas Engelbart, abandoned it.