Fixes doctests

Author: kiwicopple

README.md

@@ -162,7 +162,7 @@ let allChanges = this.socket.channel('realtime:*')
 
 There are a some requirements for your database
 
-1. It must be Postgres (I have only tested on 9.6+)
+1. It must be Postgres 10+ as it uses logical replication
 2. Set up your DB for replication
    1. it must have the `wal_level` set to logical. You can check this by running `SHOW wal_level;`. To set the `wal_level`, you can call `ALTER SYSTEM SET wal_level = logical;`
    2. You must set `max_replication_slots` to at least 1: `ALTER SYSTEM SET max_replication_slots = 5;`

server/test/realtime_web/channels/realtime_channel_test.exs

@@ -4,7 +4,7 @@ defmodule RealtimeWeb.RealtimeChannelTest do
   setup do
     {:ok, _, socket} =
       socket(RealtimeWeb.UserSocket, "user_id", %{some: :assign})
-      |> subscribe_and_join(RealtimeWeb.RealtimeChannel, "realtime")
+      |> subscribe_and_join(RealtimeWeb.RealtimeChannel, "realtime:*")
 
     {:ok, socket: socket}
   end