message: docs: note on mongodb server version compatibility
diff: @@ -11,6 +11,9 @@ currently available APIs and troubleshooting, go to [our wiki](https://github.co
  For our official documentation, please visit [MongoDB Docs
  page](https://docs.mongodb.com/mongodb-shell).
  +MongoDB Shell works with MongoDB >= 3.6. However, please be aware that 3.6 is
  +EOL in April 2021.
  +
  ![MongoDB Shell Example](./mongosh.gif)
  ## Installation
  