Install MongoDB on Ubuntu 16.04 (Xenial) Proposed Changes

[timfrietas]

Link: https://linode.com/docs/databases/mongodb/install-mongodb-on-ubuntu-16-04/

Issue

Suggested Fix

This document (and many other MongoDB docs if you have them incorrectly state the latest version as 3.2. It is now 4.0.

[Rajakavitha1]

This issue has been addressed in: #2623