I don't believe the agile teams, which are situated in same building, and same room should help out one another by sending Wiki's link. Agile is all about communication and face to face communication is the best way if you can do. I did notice quite a lot people like this trend to share wikis and ask to read through and come back with questions. Communication is a one of most important key for Agile team to understand and help each other to progress well towards sprint goal.
Agile Manifesto about communications:
"The most efficient and effective method of conveying information to and within a development
team is face-to-face conversation."
PMBOK about communications:
“Face to face meetings are the most effective means for communicating and resolving issues with stakeholders”