Update description of the server name

Author: cbrummitt

README.md

@@ -40,7 +40,7 @@ You can access Rocket.Chat through an app or in any web browser (Chrome, Firefox
 We recommend you use a Rocket.Chat app on your phone or computer, so that it's easy to access it and to get [notifications](#notifications). To get started:
 
 1. [:arrow_down: Download Rocket.Chat](https://rocket.chat/download) on as many devices as you want (Android, iOS, Mac, Windows, Linux).
-2. Open the app and **enter the server name** that we sent to you via email. The server name looks like `server-name.rocket.chat` but with `server-name` replaced by a word; look for that word in the email we sent you. Press <kbd>CONNECT</kbd>.
+2. Open the app and **enter the server name** that we sent to you via email. The server name looks like `https://adansonia-xyz.rocket.chat` but with `xyz` replaced by a word; look for that word in the email we sent you. (That word that has something to do with trees.) Press <kbd>CONNECT</kbd>.
 3. Enter the **username and password** that were sent to you in an email, and press <kbd>LOGIN</kbd>. 
 
 You should now be logged into Rocket.Chat. Nice work! :thumbsup: Skip ahead to [add a profile picture](#add-a-profile-picture-man_with_turban-older_woman-japanese_ogre).