Update tunneling.md (#208)

Added note to step 3 describing prerequisites

Author: AuthAxel

Administration/tunneling.md

@@ -48,6 +48,8 @@ Tailscale is a VPN provider enabling a secure remote connection to your PC. An o
 
 * Add your connecting device's machine name (the one you want to use SillyTavern with) to SillyTavern's whitelist by following [Managing whitelisted IPs](./remote-connections.md#whitelist-based-access-control).
 
+**NOTE:** While editing the config you want to set listen to true if you haven't referenced from [Remote Connections](./remote-connections.md#allowing-remote-connections).
+
 ### 4. Connecting
 
 Now whenever you want to use SillyTavern from anywhere all you have to do is: