message: Remove excess parenthesis from README.md code sample
diff: @@ -75,7 +75,7 @@ server.channel('user/:id', {
  const user = await db.loadUser(ctx.params.id)
  server.log.add(
  { type: 'USER_NAME', name: user.name },
  - { clients: [ctx.clientId] })
  + { clients: [ctx.clientId] }
  )
  }
  })
  