Readme create connection loader class

[Amorim33]

Is this part of the documentation correct?

UserConnectionLoader is not been used.

Ref.
https://github.com/danielrearden/slonik-dataloaders#createconnectionloaderclass

[Amorim33]

Also, missing a comma here:

Fix

const UserByIdLoader = createNodeByIdLoaderClass({
  column: {
    name: 'unique_id',
    type: 'text',
  },
  query: sql.type(User)`
    SELECT
      *
    FROM user
  `,
});