message: Fix the example in the switching to postgres tutorial
  The `ssl` config is part of the `connection` config. It's misplaced
  under the `knexConfig.pool`, which might lead to confusion. This PR
  fixes it.
diff: @@ -72,6 +72,12 @@ backend:
  + port: ${POSTGRES_PORT}
  + user: ${POSTGRES_USER}
  + password: ${POSTGRES_PASSWORD}
  ++ # https://node-postgres.com/features/ssl
  ++ # you can set the sslmode configuration option via the `PGSSLMODE` environment variable
  ++ # see https://www.postgresql.org/docs/current/libpq-ssl.html Table 33.1. SSL Mode Descriptions (e.g. require)
  ++ # ssl:
  ++ # ca: # if you have a CA file and want to verify it you can uncomment this section
  ++ # $file: <file-path>/ca/server.crt
  + # Refer to Tarn docs for default values on PostgreSQL pool configuration - https://github.com/Vincit/tarn.js
  + knexConfig:
  + pool:
  @@ -79,12 +85,6 @@ backend:
  + max: 12
  + acquireTimeoutMillis: 60000
  + idleTimeoutMillis: 60000
  -+ # https://node-postgres.com/features/ssl
  -+ # you can set the sslmode configuration option via the `PGSSLMODE` environment variable
  -+ # see https://www.postgresql.org/docs/current/libpq-ssl.html Table 33.1. SSL Mode Descriptions (e.g. require)
  -+ # ssl:
  -+ # ca: # if you have a CA file and want to verify it you can uncomment this section
  -+ # $file: <file-path>/ca/server.crt
  ```
  ### Using a single database
  