docs: updated to describe ALLOW_LIST_USERS (#345)

Author: itzg

README.md

@@ -144,16 +144,18 @@ are also printed to the log when a player joins. There are 3 levels of permissio
 -e VISITORS "1234567890,0987654321"
 ```
 
-## Whitelist
+## Allowlist
 
-There are two ways to handle a whitelist. The first is to set the `WHITE_LIST` environment variable to true and map in [a whitelist.json](https://minecraft.gamepedia.com/Whitelist.json) that is custom-crafted to the container. The other is to use the `WHITE_LIST_USERS` environment variable to list users that should be whitelisted. This list is player names. The server will look up the names and add in the XUID to match the player.
+There are two ways to handle a whitelist:
+
+The first is to set the `ALLOW_LIST` environment variable to true and map in an [allowlist.json](https://minecraft.gamepedia.com/Whitelist.json) file (previously known as "whitelist.json") that is custom-crafted to the container. 
+
+The other is to set the `ALLOW_LIST_USERS` environment variable to a comma-separated list of gamer tag usernames that should be allowed. The server will look up the names and add in the XUID to match the player.
 
 ```shell
--e WHITE_LIST_USERS="player1,player2,player3"
+-e ALLOW_LIST_USERS="player1,player2,player3"
 ```
 
-> Starting with 1.16.230.50, `ALLOW_LIST`, `ALLOW_LIST_USERS`, and the file `allowlist.json` will be used instead.
-
 ## Mods Addons 
 
 Also known as behavior or resource packs, in order to add mods into your server you can follow these steps, tested with [OPS (One Player Sleep)](https://foxynotail.com/addons/ops/) and [bedrocktweaks](https://bedrocktweaks.net/resource-packs/)