message: (doc) Use https link for directing users to knexjs
diff: @@ -12,7 +12,7 @@ Once you're ready to deploy Backstage in production, or to have a more
  persistent development setup, you can switch the Backstage database to
  PostgreSQL.
  -Backstage uses the [Knex](http://knexjs.org/) library, making it fairly easy to
  +Backstage uses the [Knex](https://knexjs.org/) library, making it fairly easy to
  switch between database backends.
  ## Install PostgreSQL
  