message: Document how access to the twitter acount happens through tweetdeck
diff: @@ -27,3 +27,8 @@ Additionally account handlers may look through the [#rustlang](https://twitter.c
  The account will only follow a small number of Project-owned/related Twitter accounts.
  At the time of writing (February 2022) this is only [@cratesiostatus](https://twitter.com/cratesiostatus) and [@rust_foundation](https://twitter.com/rust_foundation).
  +
  +### Access
  +
  +Access to the account is controlled through TweetDeck. The main account credentials are stored in the project password manager.
  +Direct access to the account should happen rarely if ever.
  